diff --git a/Emby.Dlna/ContentDirectory/ControlHandler.cs b/Emby.Dlna/ContentDirectory/ControlHandler.cs
index 26a816107..b354421ea 100644
--- a/Emby.Dlna/ContentDirectory/ControlHandler.cs
+++ b/Emby.Dlna/ContentDirectory/ControlHandler.cs
@@ -539,7 +539,7 @@ namespace Emby.Dlna.ContentDirectory
                 User = user,
                 Recursive = true,
                 IsMissing = false,
-                ExcludeItemTypes = new[] { nameof(Book) },
+                ExcludeItemTypes = new[] { BaseItemKind.Book },
                 IsFolder = isFolder,
                 MediaTypes = mediaTypes,
                 DtoOptions = GetDtoOptions()
@@ -619,7 +619,7 @@ namespace Emby.Dlna.ContentDirectory
                 Limit = limit,
                 StartIndex = startIndex,
                 IsVirtualItem = false,
-                ExcludeItemTypes = new[] { nameof(Book) },
+                ExcludeItemTypes = new[] { BaseItemKind.Book },
                 IsPlaceHolder = false,
                 DtoOptions = GetDtoOptions(),
                 OrderBy = GetOrderBy(sort, folder.IsPreSorted)
@@ -644,7 +644,7 @@ namespace Emby.Dlna.ContentDirectory
             {
                 StartIndex = startIndex,
                 Limit = limit,
-                IncludeItemTypes = new[] { nameof(LiveTvChannel) },
+                IncludeItemTypes = new[] { BaseItemKind.LiveTvChannel },
                 OrderBy = GetOrderBy(sort, false)
             };
 
@@ -675,23 +675,23 @@ namespace Emby.Dlna.ContentDirectory
             switch (stubType)
             {
                 case StubType.Latest:
-                    return GetLatest(item, query, nameof(Audio));
+                    return GetLatest(item, query, BaseItemKind.Audio);
                 case StubType.Playlists:
                     return GetMusicPlaylists(query);
                 case StubType.Albums:
-                    return GetChildrenOfItem(item, query, nameof(MusicAlbum));
+                    return GetChildrenOfItem(item, query, BaseItemKind.MusicAlbum);
                 case StubType.Artists:
                     return GetMusicArtists(item, query);
                 case StubType.AlbumArtists:
                     return GetMusicAlbumArtists(item, query);
                 case StubType.FavoriteAlbums:
-                    return GetChildrenOfItem(item, query, nameof(MusicAlbum), true);
+                    return GetChildrenOfItem(item, query, BaseItemKind.MusicAlbum, true);
                 case StubType.FavoriteArtists:
                     return GetFavoriteArtists(item, query);
                 case StubType.FavoriteSongs:
-                    return GetChildrenOfItem(item, query, nameof(Audio), true);
+                    return GetChildrenOfItem(item, query, BaseItemKind.Audio, true);
                 case StubType.Songs:
-                    return GetChildrenOfItem(item, query, nameof(Audio));
+                    return GetChildrenOfItem(item, query, BaseItemKind.Audio);
                 case StubType.Genres:
                     return GetMusicGenres(item, query);
             }
@@ -746,13 +746,13 @@ namespace Emby.Dlna.ContentDirectory
                 case StubType.ContinueWatching:
                     return GetMovieContinueWatching(item, query);
                 case StubType.Latest:
-                    return GetLatest(item, query, nameof(Movie));
+                    return GetLatest(item, query, BaseItemKind.Movie);
                 case StubType.Movies:
-                    return GetChildrenOfItem(item, query, nameof(Movie));
+                    return GetChildrenOfItem(item, query, BaseItemKind.Movie);
                 case StubType.Collections:
                     return GetMovieCollections(query);
                 case StubType.Favorites:
-                    return GetChildrenOfItem(item, query, nameof(Movie), true);
+                    return GetChildrenOfItem(item, query, BaseItemKind.Movie, true);
                 case StubType.Genres:
                     return GetGenres(item, query);
             }
@@ -831,13 +831,13 @@ namespace Emby.Dlna.ContentDirectory
                 case StubType.NextUp:
                     return GetNextUp(item, query);
                 case StubType.Latest:
-                    return GetLatest(item, query, nameof(Episode));
+                    return GetLatest(item, query, BaseItemKind.Episode);
                 case StubType.Series:
-                    return GetChildrenOfItem(item, query, nameof(Series));
+                    return GetChildrenOfItem(item, query, BaseItemKind.Series);
                 case StubType.FavoriteSeries:
-                    return GetChildrenOfItem(item, query, nameof(Series), true);
+                    return GetChildrenOfItem(item, query, BaseItemKind.Series, true);
                 case StubType.FavoriteEpisodes:
-                    return GetChildrenOfItem(item, query, nameof(Episode), true);
+                    return GetChildrenOfItem(item, query, BaseItemKind.Episode, true);
                 case StubType.Genres:
                     return GetGenres(item, query);
             }
@@ -898,7 +898,7 @@ namespace Emby.Dlna.ContentDirectory
         private QueryResult<ServerItem> GetMovieCollections(InternalItemsQuery query)
         {
             query.Recursive = true;
-            query.IncludeItemTypes = new[] { nameof(BoxSet) };
+            query.IncludeItemTypes = new[] { BaseItemKind.BoxSet };
 
             var result = _libraryManager.GetItemsResult(query);
 
@@ -913,7 +913,7 @@ namespace Emby.Dlna.ContentDirectory
         /// <param name="itemType">The item type.</param>
         /// <param name="isFavorite">A value indicating whether to only fetch favorite items.</param>
         /// <returns>The <see cref="QueryResult{ServerItem}"/>.</returns>
-        private QueryResult<ServerItem> GetChildrenOfItem(BaseItem parent, InternalItemsQuery query, string itemType, bool isFavorite = false)
+        private QueryResult<ServerItem> GetChildrenOfItem(BaseItem parent, InternalItemsQuery query, BaseItemKind itemType, bool isFavorite = false)
         {
             query.Recursive = true;
             query.Parent = parent;
@@ -1013,7 +1013,7 @@ namespace Emby.Dlna.ContentDirectory
         private QueryResult<ServerItem> GetMusicPlaylists(InternalItemsQuery query)
         {
             query.Parent = null;
-            query.IncludeItemTypes = new[] { nameof(Playlist) };
+            query.IncludeItemTypes = new[] { BaseItemKind.Playlist };
             query.Recursive = true;
 
             var result = _libraryManager.GetItemsResult(query);
@@ -1052,7 +1052,7 @@ namespace Emby.Dlna.ContentDirectory
         /// <param name="query">The <see cref="InternalItemsQuery"/>.</param>
         /// <param name="itemType">The item type.</param>
         /// <returns>The <see cref="QueryResult{ServerItem}"/>.</returns>
-        private QueryResult<ServerItem> GetLatest(BaseItem parent, InternalItemsQuery query, string itemType)
+        private QueryResult<ServerItem> GetLatest(BaseItem parent, InternalItemsQuery query, BaseItemKind itemType)
         {
             query.OrderBy = Array.Empty<(string, SortOrder)>();
 
@@ -1086,7 +1086,7 @@ namespace Emby.Dlna.ContentDirectory
             {
                 Recursive = true,
                 ArtistIds = new[] { item.Id },
-                IncludeItemTypes = new[] { nameof(MusicAlbum) },
+                IncludeItemTypes = new[] { BaseItemKind.MusicAlbum },
                 Limit = limit,
                 StartIndex = startIndex,
                 DtoOptions = GetDtoOptions(),
@@ -1115,8 +1115,8 @@ namespace Emby.Dlna.ContentDirectory
                 GenreIds = new[] { item.Id },
                 IncludeItemTypes = new[]
                 {
-                    nameof(Movie),
-                    nameof(Series)
+                    BaseItemKind.Movie,
+                    BaseItemKind.Series
                 },
                 Limit = limit,
                 StartIndex = startIndex,
@@ -1144,7 +1144,7 @@ namespace Emby.Dlna.ContentDirectory
             {
                 Recursive = true,
                 GenreIds = new[] { item.Id },
-                IncludeItemTypes = new[] { nameof(MusicAlbum) },
+                IncludeItemTypes = new[] { BaseItemKind.MusicAlbum },
                 Limit = limit,
                 StartIndex = startIndex,
                 DtoOptions = GetDtoOptions(),
diff --git a/Emby.Server.Implementations/Channels/ChannelManager.cs b/Emby.Server.Implementations/Channels/ChannelManager.cs
index f65eaec1c..8c167824e 100644
--- a/Emby.Server.Implementations/Channels/ChannelManager.cs
+++ b/Emby.Server.Implementations/Channels/ChannelManager.cs
@@ -541,7 +541,7 @@ namespace Emby.Server.Implementations.Channels
             return _libraryManager.GetItemIds(
                 new InternalItemsQuery
                 {
-                    IncludeItemTypes = new[] { nameof(Channel) },
+                    IncludeItemTypes = new[] { BaseItemKind.Channel },
                     OrderBy = new[] { (ItemSortBy.SortName, SortOrder.Ascending) }
                 }).Select(i => GetChannelFeatures(i)).ToArray();
         }
diff --git a/Emby.Server.Implementations/Channels/ChannelPostScanTask.cs b/Emby.Server.Implementations/Channels/ChannelPostScanTask.cs
index 2391eed42..b358ba4d5 100644
--- a/Emby.Server.Implementations/Channels/ChannelPostScanTask.cs
+++ b/Emby.Server.Implementations/Channels/ChannelPostScanTask.cs
@@ -2,6 +2,7 @@ using System;
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
+using Jellyfin.Data.Enums;
 using MediaBrowser.Controller.Channels;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Library;
@@ -51,7 +52,7 @@ namespace Emby.Server.Implementations.Channels
 
             var uninstalledChannels = _libraryManager.GetItemList(new InternalItemsQuery
             {
-                IncludeItemTypes = new[] { nameof(Channel) },
+                IncludeItemTypes = new[] { BaseItemKind.Channel },
                 ExcludeItemIds = installedChannelIds.ToArray()
             });
 
diff --git a/Emby.Server.Implementations/Data/SqliteItemRepository.cs b/Emby.Server.Implementations/Data/SqliteItemRepository.cs
index 13f1df7c8..7731eb694 100644
--- a/Emby.Server.Implementations/Data/SqliteItemRepository.cs
+++ b/Emby.Server.Implementations/Data/SqliteItemRepository.cs
@@ -196,57 +196,56 @@ namespace Emby.Server.Implementations.Data
 
         private static readonly string _mediaAttachmentInsertPrefix;
 
-        private static readonly HashSet<string> _programTypes = new HashSet<string>(StringComparer.OrdinalIgnoreCase)
+        private static readonly HashSet<BaseItemKind> _programTypes = new()
         {
-            "Program",
-            "TvChannel",
-            "LiveTvProgram",
-            "LiveTvTvChannel"
+            BaseItemKind.Program,
+            BaseItemKind.TvChannel,
+            BaseItemKind.LiveTvProgram,
+            BaseItemKind.LiveTvChannel
         };
 
-        private static readonly HashSet<string> _programExcludeParentTypes = new HashSet<string>(StringComparer.OrdinalIgnoreCase)
+        private static readonly HashSet<BaseItemKind> _programExcludeParentTypes = new()
         {
-            "Series",
-            "Season",
-            "MusicAlbum",
-            "MusicArtist",
-            "PhotoAlbum"
+            BaseItemKind.Series,
+            BaseItemKind.Season,
+            BaseItemKind.MusicAlbum,
+            BaseItemKind.MusicArtist,
+            BaseItemKind.PhotoAlbum
         };
 
-        private static readonly HashSet<string> _serviceTypes = new HashSet<string>(StringComparer.OrdinalIgnoreCase)
+        private static readonly HashSet<BaseItemKind> _serviceTypes = new()
         {
-            "TvChannel",
-            "LiveTvTvChannel"
+            BaseItemKind.TvChannel,
+            BaseItemKind.LiveTvChannel
         };
 
-        private static readonly HashSet<string> _startDateTypes = new HashSet<string>(StringComparer.OrdinalIgnoreCase)
+        private static readonly HashSet<BaseItemKind> _startDateTypes = new()
         {
-            "Program",
-            "LiveTvProgram"
+            BaseItemKind.Program,
+            BaseItemKind.LiveTvProgram
         };
 
-        private static readonly HashSet<string> _seriesTypes = new HashSet<string>(StringComparer.OrdinalIgnoreCase)
+        private static readonly HashSet<BaseItemKind> _seriesTypes = new()
         {
-            "Book",
-            "AudioBook",
-            "Episode",
-            "Season"
+            BaseItemKind.Book,
+            BaseItemKind.AudioBook,
+            BaseItemKind.Episode,
+            BaseItemKind.Season
         };
 
-        private static readonly HashSet<string> _artistExcludeParentTypes = new HashSet<string>(StringComparer.OrdinalIgnoreCase)
+        private static readonly HashSet<BaseItemKind> _artistExcludeParentTypes = new()
         {
-            "Series",
-            "Season",
-            "PhotoAlbum"
+            BaseItemKind.Series,
+            BaseItemKind.Season,
+            BaseItemKind.PhotoAlbum
         };
 
-        private static readonly HashSet<string> _artistsTypes = new HashSet<string>(StringComparer.OrdinalIgnoreCase)
+        private static readonly HashSet<BaseItemKind> _artistsTypes = new()
         {
-            "Audio",
-            "MusicAlbum",
-            "MusicVideo",
-            "AudioBook",
-            "AudioPodcast"
+            BaseItemKind.Audio,
+            BaseItemKind.MusicAlbum,
+            BaseItemKind.MusicVideo,
+            BaseItemKind.AudioBook
         };
 
         private static readonly Type[] _knownTypes =
@@ -2212,7 +2211,7 @@ namespace Emby.Server.Implementations.Data
 
         private bool HasProgramAttributes(InternalItemsQuery query)
         {
-            if (_programExcludeParentTypes.Contains(query.ParentType))
+            if (query.ParentType != null && _programExcludeParentTypes.Contains(query.ParentType.Value))
             {
                 return false;
             }
@@ -2227,7 +2226,7 @@ namespace Emby.Server.Implementations.Data
 
         private bool HasServiceName(InternalItemsQuery query)
         {
-            if (_programExcludeParentTypes.Contains(query.ParentType))
+            if (query.ParentType != null && _programExcludeParentTypes.Contains(query.ParentType.Value))
             {
                 return false;
             }
@@ -2242,7 +2241,7 @@ namespace Emby.Server.Implementations.Data
 
         private bool HasStartDate(InternalItemsQuery query)
         {
-            if (_programExcludeParentTypes.Contains(query.ParentType))
+            if (query.ParentType != null && _programExcludeParentTypes.Contains(query.ParentType.Value))
             {
                 return false;
             }
@@ -2262,7 +2261,7 @@ namespace Emby.Server.Implementations.Data
                 return true;
             }
 
-            return query.IncludeItemTypes.Contains("Episode", StringComparer.OrdinalIgnoreCase);
+            return query.IncludeItemTypes.Contains(BaseItemKind.Episode);
         }
 
         private bool HasTrailerTypes(InternalItemsQuery query)
@@ -2272,12 +2271,12 @@ namespace Emby.Server.Implementations.Data
                 return true;
             }
 
-            return query.IncludeItemTypes.Contains("Trailer", StringComparer.OrdinalIgnoreCase);
+            return query.IncludeItemTypes.Contains(BaseItemKind.Trailer);
         }
 
         private bool HasArtistFields(InternalItemsQuery query)
         {
-            if (_artistExcludeParentTypes.Contains(query.ParentType))
+            if (query.ParentType != null && _artistExcludeParentTypes.Contains(query.ParentType.Value))
             {
                 return false;
             }
@@ -2292,7 +2291,7 @@ namespace Emby.Server.Implementations.Data
 
         private bool HasSeriesFields(InternalItemsQuery query)
         {
-            if (string.Equals(query.ParentType, "PhotoAlbum", StringComparison.OrdinalIgnoreCase))
+            if (query.ParentType == BaseItemKind.PhotoAlbum)
             {
                 return false;
             }
@@ -3487,8 +3486,8 @@ namespace Emby.Server.Implementations.Data
             if (query.IsMovie == true)
             {
                 if (query.IncludeItemTypes.Length == 0
-                    || query.IncludeItemTypes.Contains(nameof(Movie))
-                    || query.IncludeItemTypes.Contains(nameof(Trailer)))
+                    || query.IncludeItemTypes.Contains(BaseItemKind.Movie)
+                    || query.IncludeItemTypes.Contains(BaseItemKind.Trailer))
                 {
                     whereClauses.Add("(IsMovie is null OR IsMovie=@IsMovie)");
                 }
@@ -3563,15 +3562,15 @@ namespace Emby.Server.Implementations.Data
                 statement?.TryBind("@IsFolder", query.IsFolder);
             }
 
-            var includeTypes = query.IncludeItemTypes.Select(MapIncludeItemTypes).Where(x => x != null).ToArray();
+            var includeTypes = query.IncludeItemTypes;
             // Only specify excluded types if no included types are specified
-            if (includeTypes.Length == 0)
+            if (query.IncludeItemTypes.Length == 0)
             {
-                var excludeTypes = query.ExcludeItemTypes.Select(MapIncludeItemTypes).Where(x => x != null).ToArray();
+                var excludeTypes = query.ExcludeItemTypes;
                 if (excludeTypes.Length == 1)
                 {
                     whereClauses.Add("type<>@type");
-                    statement?.TryBind("@type", excludeTypes[0]);
+                    statement?.TryBind("@type", excludeTypes[0].ToString());
                 }
                 else if (excludeTypes.Length > 1)
                 {
@@ -3582,7 +3581,7 @@ namespace Emby.Server.Implementations.Data
             else if (includeTypes.Length == 1)
             {
                 whereClauses.Add("type=@type");
-                statement?.TryBind("@type", includeTypes[0]);
+                statement?.TryBind("@type", includeTypes[0].ToString());
             }
             else if (includeTypes.Length > 1)
             {
@@ -3911,7 +3910,7 @@ namespace Emby.Server.Implementations.Data
                 if (query.IsPlayed.HasValue)
                 {
                     // We should probably figure this out for all folders, but for right now, this is the only place where we need it
-                    if (query.IncludeItemTypes.Length == 1 && string.Equals(query.IncludeItemTypes[0], nameof(Series), StringComparison.OrdinalIgnoreCase))
+                    if (query.IncludeItemTypes.Length == 1 && query.IncludeItemTypes[0] == BaseItemKind.Series)
                     {
                         if (query.IsPlayed.Value)
                         {
@@ -4761,27 +4760,27 @@ namespace Emby.Server.Implementations.Data
         {
             var list = new List<string>();
 
-            if (IsTypeInQuery(nameof(Person), query))
+            if (IsTypeInQuery(BaseItemKind.Person, query))
             {
                 list.Add(typeof(Person).FullName);
             }
 
-            if (IsTypeInQuery(nameof(Genre), query))
+            if (IsTypeInQuery(BaseItemKind.Genre, query))
             {
                 list.Add(typeof(Genre).FullName);
             }
 
-            if (IsTypeInQuery(nameof(MusicGenre), query))
+            if (IsTypeInQuery(BaseItemKind.MusicGenre, query))
             {
                 list.Add(typeof(MusicGenre).FullName);
             }
 
-            if (IsTypeInQuery(nameof(MusicArtist), query))
+            if (IsTypeInQuery(BaseItemKind.MusicArtist, query))
             {
                 list.Add(typeof(MusicArtist).FullName);
             }
 
-            if (IsTypeInQuery(nameof(Studio), query))
+            if (IsTypeInQuery(BaseItemKind.Studio, query))
             {
                 list.Add(typeof(Studio).FullName);
             }
@@ -4789,14 +4788,14 @@ namespace Emby.Server.Implementations.Data
             return list;
         }
 
-        private bool IsTypeInQuery(string type, InternalItemsQuery query)
+        private bool IsTypeInQuery(BaseItemKind type, InternalItemsQuery query)
         {
-            if (query.ExcludeItemTypes.Contains(type, StringComparer.OrdinalIgnoreCase))
+            if (query.ExcludeItemTypes.Contains(type))
             {
                 return false;
             }
 
-            return query.IncludeItemTypes.Length == 0 || query.IncludeItemTypes.Contains(type, StringComparer.OrdinalIgnoreCase);
+            return query.IncludeItemTypes.Length == 0 || query.IncludeItemTypes.Contains(type);
         }
 
         private string GetCleanValue(string value)
@@ -4836,12 +4835,12 @@ namespace Emby.Server.Implementations.Data
                 return true;
             }
 
-            if (query.IncludeItemTypes.Contains(nameof(Episode), StringComparer.OrdinalIgnoreCase)
-                || query.IncludeItemTypes.Contains(nameof(Video), StringComparer.OrdinalIgnoreCase)
-                || query.IncludeItemTypes.Contains(nameof(Movie), StringComparer.OrdinalIgnoreCase)
-                || query.IncludeItemTypes.Contains(nameof(MusicVideo), StringComparer.OrdinalIgnoreCase)
-                || query.IncludeItemTypes.Contains(nameof(Series), StringComparer.OrdinalIgnoreCase)
-                || query.IncludeItemTypes.Contains(nameof(Season), StringComparer.OrdinalIgnoreCase))
+            if (query.IncludeItemTypes.Contains(BaseItemKind.Episode)
+                || query.IncludeItemTypes.Contains(BaseItemKind.Video)
+                || query.IncludeItemTypes.Contains(BaseItemKind.Movie)
+                || query.IncludeItemTypes.Contains(BaseItemKind.MusicVideo)
+                || query.IncludeItemTypes.Contains(BaseItemKind.Series)
+                || query.IncludeItemTypes.Contains(BaseItemKind.Season))
             {
                 return true;
             }
@@ -4890,22 +4889,6 @@ where AncestorIdText not null and ItemValues.Value not null and ItemValues.Type
             return dict;
         }
 
-        private string MapIncludeItemTypes(string value)
-        {
-            if (_types.TryGetValue(value, out string result))
-            {
-                return result;
-            }
-
-            if (IsValidType(value))
-            {
-                return value;
-            }
-
-            Logger.LogWarning("Unknown item type: {ItemType}", value);
-            return null;
-        }
-
         public void DeleteItem(Guid id)
         {
             if (id == Guid.Empty)
@@ -5569,7 +5552,7 @@ AND Type = @InternalPersonType)");
             return result;
         }
 
-        private static ItemCounts GetItemCounts(IReadOnlyList<ResultSetValue> reader, int countStartColumn, string[] typesToCount)
+        private static ItemCounts GetItemCounts(IReadOnlyList<ResultSetValue> reader, int countStartColumn, BaseItemKind[] typesToCount)
         {
             var counts = new ItemCounts();
 
diff --git a/Emby.Server.Implementations/Dto/DtoService.cs b/Emby.Server.Implementations/Dto/DtoService.cs
index b91ff6408..a34bfdb75 100644
--- a/Emby.Server.Implementations/Dto/DtoService.cs
+++ b/Emby.Server.Implementations/Dto/DtoService.cs
@@ -470,7 +470,7 @@ namespace Emby.Server.Implementations.Dto
             {
                 var parentAlbumIds = _libraryManager.GetItemIds(new InternalItemsQuery
                 {
-                    IncludeItemTypes = new[] { nameof(MusicAlbum) },
+                    IncludeItemTypes = new[] { BaseItemKind.MusicAlbum },
                     Name = item.Album,
                     Limit = 1
                 });
diff --git a/Emby.Server.Implementations/Images/CollectionFolderImageProvider.cs b/Emby.Server.Implementations/Images/CollectionFolderImageProvider.cs
index 0229fbae7..7e12ebb08 100644
--- a/Emby.Server.Implementations/Images/CollectionFolderImageProvider.cs
+++ b/Emby.Server.Implementations/Images/CollectionFolderImageProvider.cs
@@ -28,35 +28,35 @@ namespace Emby.Server.Implementations.Images
             var view = (CollectionFolder)item;
             var viewType = view.CollectionType;
 
-            string[] includeItemTypes;
+            BaseItemKind[] includeItemTypes;
 
             if (string.Equals(viewType, CollectionType.Movies, StringComparison.Ordinal))
             {
-                includeItemTypes = new string[] { "Movie" };
+                includeItemTypes = new[] { BaseItemKind.Movie };
             }
             else if (string.Equals(viewType, CollectionType.TvShows, StringComparison.Ordinal))
             {
-                includeItemTypes = new string[] { "Series" };
+                includeItemTypes = new[] { BaseItemKind.Series };
             }
             else if (string.Equals(viewType, CollectionType.Music, StringComparison.Ordinal))
             {
-                includeItemTypes = new string[] { "MusicAlbum" };
+                includeItemTypes = new[] { BaseItemKind.MusicAlbum };
             }
             else if (string.Equals(viewType, CollectionType.Books, StringComparison.Ordinal))
             {
-                includeItemTypes = new string[] { "Book", "AudioBook" };
+                includeItemTypes = new[] { BaseItemKind.Book, BaseItemKind.AudioBook };
             }
             else if (string.Equals(viewType, CollectionType.BoxSets, StringComparison.Ordinal))
             {
-                includeItemTypes = new string[] { "BoxSet" };
+                includeItemTypes = new[] { BaseItemKind.BoxSet };
             }
             else if (string.Equals(viewType, CollectionType.HomeVideos, StringComparison.Ordinal) || string.Equals(viewType, CollectionType.Photos, StringComparison.Ordinal))
             {
-                includeItemTypes = new string[] { "Video", "Photo" };
+                includeItemTypes = new[] { BaseItemKind.Video, BaseItemKind.Photo };
             }
             else
             {
-                includeItemTypes = new string[] { "Video", "Audio", "Photo", "Movie", "Series" };
+                includeItemTypes = new[] { BaseItemKind.Video, BaseItemKind.Audio, BaseItemKind.Photo, BaseItemKind.Movie, BaseItemKind.Series };
             }
 
             var recursive = !string.Equals(CollectionType.Playlists, viewType, StringComparison.OrdinalIgnoreCase);
diff --git a/Emby.Server.Implementations/Images/DynamicImageProvider.cs b/Emby.Server.Implementations/Images/DynamicImageProvider.cs
index 900b3fd9c..0c3fe33a3 100644
--- a/Emby.Server.Implementations/Images/DynamicImageProvider.cs
+++ b/Emby.Server.Implementations/Images/DynamicImageProvider.cs
@@ -6,6 +6,7 @@ using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
+using Jellyfin.Data.Enums;
 using MediaBrowser.Common.Configuration;
 using MediaBrowser.Controller.Drawing;
 using MediaBrowser.Controller.Dto;
@@ -41,7 +42,7 @@ namespace Emby.Server.Implementations.Images
                 User = view.UserId.HasValue ? _userManager.GetUserById(view.UserId.Value) : null,
                 CollapseBoxSetItems = false,
                 Recursive = recursive,
-                ExcludeItemTypes = new[] { "UserView", "CollectionFolder", "Person" },
+                ExcludeItemTypes = new[] { BaseItemKind.UserView, BaseItemKind.CollectionFolder, BaseItemKind.Person },
                 DtoOptions = new DtoOptions(false)
             });
 
diff --git a/Emby.Server.Implementations/Images/GenreImageProvider.cs b/Emby.Server.Implementations/Images/GenreImageProvider.cs
index 1f5090f7f..f8eefad6b 100644
--- a/Emby.Server.Implementations/Images/GenreImageProvider.cs
+++ b/Emby.Server.Implementations/Images/GenreImageProvider.cs
@@ -43,7 +43,7 @@ namespace Emby.Server.Implementations.Images
             return _libraryManager.GetItemList(new InternalItemsQuery
             {
                 Genres = new[] { item.Name },
-                IncludeItemTypes = new[] { nameof(Series), nameof(Movie) },
+                IncludeItemTypes = new[] { BaseItemKind.Series, BaseItemKind.Movie },
                 OrderBy = new[] { (ItemSortBy.Random, SortOrder.Ascending) },
                 Limit = 4,
                 Recursive = true,
diff --git a/Emby.Server.Implementations/Images/MusicGenreImageProvider.cs b/Emby.Server.Implementations/Images/MusicGenreImageProvider.cs
index baf1c9051..31f053f06 100644
--- a/Emby.Server.Implementations/Images/MusicGenreImageProvider.cs
+++ b/Emby.Server.Implementations/Images/MusicGenreImageProvider.cs
@@ -44,9 +44,9 @@ namespace Emby.Server.Implementations.Images
                 Genres = new[] { item.Name },
                 IncludeItemTypes = new[]
                 {
-                    nameof(MusicAlbum),
-                    nameof(MusicVideo),
-                    nameof(Audio)
+                    BaseItemKind.MusicAlbum,
+                    BaseItemKind.MusicVideo,
+                    BaseItemKind.Audio
                 },
                 OrderBy = new[] { (ItemSortBy.Random, SortOrder.Ascending) },
                 Limit = 4,
diff --git a/Emby.Server.Implementations/Library/LibraryManager.cs b/Emby.Server.Implementations/Library/LibraryManager.cs
index 778b6225e..57f66dcc3 100644
--- a/Emby.Server.Implementations/Library/LibraryManager.cs
+++ b/Emby.Server.Implementations/Library/LibraryManager.cs
@@ -965,7 +965,7 @@ namespace Emby.Server.Implementations.Library
             {
                 var existing = GetItemList(new InternalItemsQuery
                 {
-                    IncludeItemTypes = new[] { nameof(MusicArtist) },
+                    IncludeItemTypes = new[] { BaseItemKind.MusicArtist },
                     Name = name,
                     DtoOptions = options
                 }).Cast<MusicArtist>()
diff --git a/Emby.Server.Implementations/Library/MusicManager.cs b/Emby.Server.Implementations/Library/MusicManager.cs
index e2f1fb0ad..d33213564 100644
--- a/Emby.Server.Implementations/Library/MusicManager.cs
+++ b/Emby.Server.Implementations/Library/MusicManager.cs
@@ -52,7 +52,7 @@ namespace Emby.Server.Implementations.Library
             var genres = item
                .GetRecursiveChildren(user, new InternalItemsQuery(user)
                {
-                   IncludeItemTypes = new[] { nameof(Audio) },
+                   IncludeItemTypes = new[] { BaseItemKind.Audio },
                    DtoOptions = dtoOptions
                })
                .Cast<Audio>()
@@ -89,7 +89,7 @@ namespace Emby.Server.Implementations.Library
         {
             return _libraryManager.GetItemList(new InternalItemsQuery(user)
             {
-                IncludeItemTypes = new[] { nameof(Audio) },
+                IncludeItemTypes = new[] { BaseItemKind.Audio },
 
                 GenreIds = genreIds.ToArray(),
 
diff --git a/Emby.Server.Implementations/Library/SearchEngine.cs b/Emby.Server.Implementations/Library/SearchEngine.cs
index bebc25b77..42374b2a2 100644
--- a/Emby.Server.Implementations/Library/SearchEngine.cs
+++ b/Emby.Server.Implementations/Library/SearchEngine.cs
@@ -59,9 +59,9 @@ namespace Emby.Server.Implementations.Library
             };
         }
 
-        private static void AddIfMissing(List<string> list, string value)
+        private static void AddIfMissing(List<BaseItemKind> list, BaseItemKind value)
         {
-            if (!list.Contains(value, StringComparer.OrdinalIgnoreCase))
+            if (!list.Contains(value))
             {
                 list.Add(value);
             }
@@ -86,63 +86,63 @@ namespace Emby.Server.Implementations.Library
             searchTerm = searchTerm.Trim().RemoveDiacritics();
 
             var excludeItemTypes = query.ExcludeItemTypes.ToList();
-            var includeItemTypes = (query.IncludeItemTypes ?? Array.Empty<string>()).ToList();
+            var includeItemTypes = (query.IncludeItemTypes ?? Array.Empty<BaseItemKind>()).ToList();
 
-            excludeItemTypes.Add(nameof(Year));
-            excludeItemTypes.Add(nameof(Folder));
+            excludeItemTypes.Add(BaseItemKind.Year);
+            excludeItemTypes.Add(BaseItemKind.Folder);
 
-            if (query.IncludeGenres && (includeItemTypes.Count == 0 || includeItemTypes.Contains("Genre", StringComparer.OrdinalIgnoreCase)))
+            if (query.IncludeGenres && (includeItemTypes.Count == 0 || includeItemTypes.Contains(BaseItemKind.Genre)))
             {
                 if (!query.IncludeMedia)
                 {
-                    AddIfMissing(includeItemTypes, nameof(Genre));
-                    AddIfMissing(includeItemTypes, nameof(MusicGenre));
+                    AddIfMissing(includeItemTypes, BaseItemKind.Genre);
+                    AddIfMissing(includeItemTypes, BaseItemKind.MusicGenre);
                 }
             }
             else
             {
-                AddIfMissing(excludeItemTypes, nameof(Genre));
-                AddIfMissing(excludeItemTypes, nameof(MusicGenre));
+                AddIfMissing(excludeItemTypes, BaseItemKind.Genre);
+                AddIfMissing(excludeItemTypes, BaseItemKind.MusicGenre);
             }
 
-            if (query.IncludePeople && (includeItemTypes.Count == 0 || includeItemTypes.Contains("People", StringComparer.OrdinalIgnoreCase) || includeItemTypes.Contains("Person", StringComparer.OrdinalIgnoreCase)))
+            if (query.IncludePeople && (includeItemTypes.Count == 0 || includeItemTypes.Contains(BaseItemKind.Person)))
             {
                 if (!query.IncludeMedia)
                 {
-                    AddIfMissing(includeItemTypes, nameof(Person));
+                    AddIfMissing(includeItemTypes, BaseItemKind.Person);
                 }
             }
             else
             {
-                AddIfMissing(excludeItemTypes, nameof(Person));
+                AddIfMissing(excludeItemTypes, BaseItemKind.Person);
             }
 
-            if (query.IncludeStudios && (includeItemTypes.Count == 0 || includeItemTypes.Contains("Studio", StringComparer.OrdinalIgnoreCase)))
+            if (query.IncludeStudios && (includeItemTypes.Count == 0 || includeItemTypes.Contains(BaseItemKind.Studio)))
             {
                 if (!query.IncludeMedia)
                 {
-                    AddIfMissing(includeItemTypes, nameof(Studio));
+                    AddIfMissing(includeItemTypes, BaseItemKind.Studio);
                 }
             }
             else
             {
-                AddIfMissing(excludeItemTypes, nameof(Studio));
+                AddIfMissing(excludeItemTypes, BaseItemKind.Studio);
             }
 
-            if (query.IncludeArtists && (includeItemTypes.Count == 0 || includeItemTypes.Contains("MusicArtist", StringComparer.OrdinalIgnoreCase)))
+            if (query.IncludeArtists && (includeItemTypes.Count == 0 || includeItemTypes.Contains(BaseItemKind.MusicArtist)))
             {
                 if (!query.IncludeMedia)
                 {
-                    AddIfMissing(includeItemTypes, nameof(MusicArtist));
+                    AddIfMissing(includeItemTypes, BaseItemKind.MusicArtist);
                 }
             }
             else
             {
-                AddIfMissing(excludeItemTypes, nameof(MusicArtist));
+                AddIfMissing(excludeItemTypes, BaseItemKind.MusicArtist);
             }
 
-            AddIfMissing(excludeItemTypes, nameof(CollectionFolder));
-            AddIfMissing(excludeItemTypes, nameof(Folder));
+            AddIfMissing(excludeItemTypes, BaseItemKind.CollectionFolder);
+            AddIfMissing(excludeItemTypes, BaseItemKind.Folder);
             var mediaTypes = query.MediaTypes.ToList();
 
             if (includeItemTypes.Count > 0)
@@ -183,7 +183,7 @@ namespace Emby.Server.Implementations.Library
 
             List<BaseItem> mediaItems;
 
-            if (searchQuery.IncludeItemTypes.Length == 1 && string.Equals(searchQuery.IncludeItemTypes[0], "MusicArtist", StringComparison.OrdinalIgnoreCase))
+            if (searchQuery.IncludeItemTypes.Length == 1 && searchQuery.IncludeItemTypes[0] == BaseItemKind.MusicArtist)
             {
                 if (!searchQuery.ParentId.Equals(Guid.Empty))
                 {
@@ -192,7 +192,7 @@ namespace Emby.Server.Implementations.Library
 
                 searchQuery.ParentId = Guid.Empty;
                 searchQuery.IncludeItemsByName = true;
-                searchQuery.IncludeItemTypes = Array.Empty<string>();
+                searchQuery.IncludeItemTypes = Array.Empty<BaseItemKind>();
                 mediaItems = _libraryManager.GetAllArtists(searchQuery).Items.Select(i => i.Item1).ToList();
             }
             else
diff --git a/Emby.Server.Implementations/Library/UserViewManager.cs b/Emby.Server.Implementations/Library/UserViewManager.cs
index 711647e7a..3593986a9 100644
--- a/Emby.Server.Implementations/Library/UserViewManager.cs
+++ b/Emby.Server.Implementations/Library/UserViewManager.cs
@@ -300,11 +300,11 @@ namespace Emby.Server.Implementations.Library
                 {
                     if (hasCollectionType.All(i => string.Equals(i.CollectionType, CollectionType.Movies, StringComparison.OrdinalIgnoreCase)))
                     {
-                        includeItemTypes = new string[] { "Movie" };
+                        includeItemTypes = new[] { BaseItemKind.Movie };
                     }
                     else if (hasCollectionType.All(i => string.Equals(i.CollectionType, CollectionType.TvShows, StringComparison.OrdinalIgnoreCase)))
                     {
-                        includeItemTypes = new string[] { "Episode" };
+                        includeItemTypes = new[] { BaseItemKind.Episode };
                     }
                 }
             }
@@ -344,13 +344,13 @@ namespace Emby.Server.Implementations.Library
             var excludeItemTypes = includeItemTypes.Length == 0 && mediaTypes.Count == 0
                 ? new[]
                 {
-                    nameof(Person),
-                    nameof(Studio),
-                    nameof(Year),
-                    nameof(MusicGenre),
-                    nameof(Genre)
+                    BaseItemKind.Person,
+                    BaseItemKind.Studio,
+                    BaseItemKind.Year,
+                    BaseItemKind.MusicGenre,
+                    BaseItemKind.Genre
                 }
-                : Array.Empty<string>();
+                : Array.Empty<BaseItemKind>();
 
             var query = new InternalItemsQuery(user)
             {
diff --git a/Emby.Server.Implementations/Library/Validators/ArtistsValidator.cs b/Emby.Server.Implementations/Library/Validators/ArtistsValidator.cs
index 40436d9c5..7591e8391 100644
--- a/Emby.Server.Implementations/Library/Validators/ArtistsValidator.cs
+++ b/Emby.Server.Implementations/Library/Validators/ArtistsValidator.cs
@@ -3,6 +3,7 @@ using System.Globalization;
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
+using Jellyfin.Data.Enums;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Entities.Audio;
 using MediaBrowser.Controller.Library;
@@ -81,7 +82,7 @@ namespace Emby.Server.Implementations.Library.Validators
 
             var deadEntities = _libraryManager.GetItemList(new InternalItemsQuery
             {
-                IncludeItemTypes = new[] { nameof(MusicArtist) },
+                IncludeItemTypes = new[] { BaseItemKind.MusicArtist },
                 IsDeadArtist = true,
                 IsLocked = false
             }).Cast<MusicArtist>().ToList();
diff --git a/Emby.Server.Implementations/Library/Validators/CollectionPostScanTask.cs b/Emby.Server.Implementations/Library/Validators/CollectionPostScanTask.cs
index 945b559ad..73e58d16c 100644
--- a/Emby.Server.Implementations/Library/Validators/CollectionPostScanTask.cs
+++ b/Emby.Server.Implementations/Library/Validators/CollectionPostScanTask.cs
@@ -64,7 +64,7 @@ namespace Emby.Server.Implementations.Library.Validators
                     var movies = _libraryManager.GetItemList(new InternalItemsQuery
                     {
                         MediaTypes = new string[] { MediaType.Video },
-                        IncludeItemTypes = new[] { nameof(Movie) },
+                        IncludeItemTypes = new[] { BaseItemKind.Movie },
                         IsVirtualItem = false,
                         OrderBy = new[] { (ItemSortBy.SortName, SortOrder.Ascending) },
                         Parent = library,
@@ -108,7 +108,7 @@ namespace Emby.Server.Implementations.Library.Validators
 
             var boxSets = _libraryManager.GetItemList(new InternalItemsQuery
             {
-                IncludeItemTypes = new[] { nameof(BoxSet) },
+                IncludeItemTypes = new[] { BaseItemKind.BoxSet },
                 CollapseBoxSetItems = false,
                 Recursive = true
             });
diff --git a/Emby.Server.Implementations/Library/Validators/PeopleValidator.cs b/Emby.Server.Implementations/Library/Validators/PeopleValidator.cs
index 8a9a4b865..601aab5b9 100644
--- a/Emby.Server.Implementations/Library/Validators/PeopleValidator.cs
+++ b/Emby.Server.Implementations/Library/Validators/PeopleValidator.cs
@@ -2,6 +2,7 @@ using System;
 using System.Globalization;
 using System.Threading;
 using System.Threading.Tasks;
+using Jellyfin.Data.Enums;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.Providers;
@@ -91,7 +92,7 @@ namespace Emby.Server.Implementations.Library.Validators
 
             var deadEntities = _libraryManager.GetItemList(new InternalItemsQuery
             {
-                IncludeItemTypes = new[] { nameof(Person) },
+                IncludeItemTypes = new[] { BaseItemKind.Person },
                 IsDeadPerson = true,
                 IsLocked = false
             });
diff --git a/Emby.Server.Implementations/Library/Validators/StudiosValidator.cs b/Emby.Server.Implementations/Library/Validators/StudiosValidator.cs
index 8577d722e..26bc49c1f 100644
--- a/Emby.Server.Implementations/Library/Validators/StudiosValidator.cs
+++ b/Emby.Server.Implementations/Library/Validators/StudiosValidator.cs
@@ -2,6 +2,7 @@ using System;
 using System.Globalization;
 using System.Threading;
 using System.Threading.Tasks;
+using Jellyfin.Data.Enums;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.Persistence;
@@ -80,7 +81,7 @@ namespace Emby.Server.Implementations.Library.Validators
 
             var deadEntities = _libraryManager.GetItemList(new InternalItemsQuery
             {
-                IncludeItemTypes = new[] { nameof(Studio) },
+                IncludeItemTypes = new[] { BaseItemKind.Studio },
                 IsDeadStudio = true,
                 IsLocked = false
             });
diff --git a/Emby.Server.Implementations/LiveTv/EmbyTV/EmbyTV.cs b/Emby.Server.Implementations/LiveTv/EmbyTV/EmbyTV.cs
index 644f9050d..e604000ad 100644
--- a/Emby.Server.Implementations/LiveTv/EmbyTV/EmbyTV.cs
+++ b/Emby.Server.Implementations/LiveTv/EmbyTV/EmbyTV.cs
@@ -1778,7 +1778,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
             {
                 var program = string.IsNullOrWhiteSpace(timer.ProgramId) ? null : _libraryManager.GetItemList(new InternalItemsQuery
                 {
-                    IncludeItemTypes = new[] { nameof(LiveTvProgram) },
+                    IncludeItemTypes = new[] { BaseItemKind.LiveTvProgram },
                     Limit = 1,
                     ExternalId = timer.ProgramId,
                     DtoOptions = new DtoOptions(true)
@@ -2137,7 +2137,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
         {
             var query = new InternalItemsQuery
             {
-                IncludeItemTypes = new string[] { nameof(LiveTvProgram) },
+                IncludeItemTypes = new[] { BaseItemKind.LiveTvProgram },
                 Limit = 1,
                 DtoOptions = new DtoOptions(true)
                 {
@@ -2352,7 +2352,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
 
             var query = new InternalItemsQuery
             {
-                IncludeItemTypes = new string[] { nameof(LiveTvProgram) },
+                IncludeItemTypes = new[] { BaseItemKind.LiveTvProgram },
                 ExternalSeriesId = seriesTimer.SeriesId,
                 DtoOptions = new DtoOptions(true)
                 {
@@ -2387,7 +2387,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
                     channel = _libraryManager.GetItemList(
                         new InternalItemsQuery
                         {
-                            IncludeItemTypes = new string[] { nameof(LiveTvChannel) },
+                            IncludeItemTypes = new[] { BaseItemKind.LiveTvChannel },
                             ItemIds = new[] { parent.ChannelId },
                             DtoOptions = new DtoOptions()
                         }).FirstOrDefault() as LiveTvChannel;
@@ -2446,7 +2446,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
                     channel = _libraryManager.GetItemList(
                         new InternalItemsQuery
                         {
-                            IncludeItemTypes = new string[] { nameof(LiveTvChannel) },
+                            IncludeItemTypes = new[] { BaseItemKind.LiveTvChannel },
                             ItemIds = new[] { programInfo.ChannelId },
                             DtoOptions = new DtoOptions()
                         }).FirstOrDefault() as LiveTvChannel;
@@ -2511,7 +2511,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
                 var seriesIds = _libraryManager.GetItemIds(
                     new InternalItemsQuery
                     {
-                        IncludeItemTypes = new[] { nameof(Series) },
+                        IncludeItemTypes = new[] { BaseItemKind.Series },
                         Name = program.Name
                     }).ToArray();
 
@@ -2524,7 +2524,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
                 {
                     var result = _libraryManager.GetItemIds(new InternalItemsQuery
                     {
-                        IncludeItemTypes = new[] { nameof(Episode) },
+                        IncludeItemTypes = new[] { BaseItemKind.Episode },
                         ParentIndexNumber = program.SeasonNumber.Value,
                         IndexNumber = program.EpisodeNumber.Value,
                         AncestorIds = seriesIds,
diff --git a/Emby.Server.Implementations/LiveTv/LiveTvDtoService.cs b/Emby.Server.Implementations/LiveTv/LiveTvDtoService.cs
index 598e3f88a..317bcbfdd 100644
--- a/Emby.Server.Implementations/LiveTv/LiveTvDtoService.cs
+++ b/Emby.Server.Implementations/LiveTv/LiveTvDtoService.cs
@@ -7,6 +7,7 @@ using System.Globalization;
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
+using Jellyfin.Data.Enums;
 using MediaBrowser.Common;
 using MediaBrowser.Common.Extensions;
 using MediaBrowser.Controller.Drawing;
@@ -161,7 +162,7 @@ namespace Emby.Server.Implementations.LiveTv
         {
             var librarySeries = _libraryManager.GetItemList(new InternalItemsQuery
             {
-                IncludeItemTypes = new string[] { nameof(Series) },
+                IncludeItemTypes = new[] { BaseItemKind.Series },
                 Name = seriesName,
                 Limit = 1,
                 ImageTypes = new ImageType[] { ImageType.Thumb },
@@ -204,7 +205,7 @@ namespace Emby.Server.Implementations.LiveTv
 
             var program = _libraryManager.GetItemList(new InternalItemsQuery
             {
-                IncludeItemTypes = new string[] { nameof(LiveTvProgram) },
+                IncludeItemTypes = new[] { BaseItemKind.LiveTvProgram },
                 ExternalSeriesId = programSeriesId,
                 Limit = 1,
                 ImageTypes = new ImageType[] { ImageType.Primary },
@@ -255,7 +256,7 @@ namespace Emby.Server.Implementations.LiveTv
         {
             var librarySeries = _libraryManager.GetItemList(new InternalItemsQuery
             {
-                IncludeItemTypes = new string[] { nameof(Series) },
+                IncludeItemTypes = new[] { BaseItemKind.Series },
                 Name = seriesName,
                 Limit = 1,
                 ImageTypes = new ImageType[] { ImageType.Thumb },
@@ -298,7 +299,7 @@ namespace Emby.Server.Implementations.LiveTv
 
             var program = _libraryManager.GetItemList(new InternalItemsQuery
             {
-                IncludeItemTypes = new string[] { nameof(Series) },
+                IncludeItemTypes = new[] { BaseItemKind.Series },
                 Name = seriesName,
                 Limit = 1,
                 ImageTypes = new ImageType[] { ImageType.Primary },
@@ -309,7 +310,7 @@ namespace Emby.Server.Implementations.LiveTv
             {
                 program = _libraryManager.GetItemList(new InternalItemsQuery
                 {
-                    IncludeItemTypes = new string[] { nameof(LiveTvProgram) },
+                    IncludeItemTypes = new[] { BaseItemKind.LiveTvProgram },
                     ExternalSeriesId = programSeriesId,
                     Limit = 1,
                     ImageTypes = new ImageType[] { ImageType.Primary },
diff --git a/Emby.Server.Implementations/LiveTv/LiveTvManager.cs b/Emby.Server.Implementations/LiveTv/LiveTvManager.cs
index a41b63f28..2f826c63e 100644
--- a/Emby.Server.Implementations/LiveTv/LiveTvManager.cs
+++ b/Emby.Server.Implementations/LiveTv/LiveTvManager.cs
@@ -191,7 +191,7 @@ namespace Emby.Server.Implementations.LiveTv
                 IsKids = query.IsKids,
                 IsSports = query.IsSports,
                 IsSeries = query.IsSeries,
-                IncludeItemTypes = new[] { nameof(LiveTvChannel) },
+                IncludeItemTypes = new[] { BaseItemKind.LiveTvChannel },
                 TopParentIds = new[] { topFolder.Id },
                 IsFavorite = query.IsFavorite,
                 IsLiked = query.IsLiked,
@@ -810,7 +810,7 @@ namespace Emby.Server.Implementations.LiveTv
 
             var internalQuery = new InternalItemsQuery(user)
             {
-                IncludeItemTypes = new[] { nameof(LiveTvProgram) },
+                IncludeItemTypes = new[] { BaseItemKind.LiveTvProgram },
                 MinEndDate = query.MinEndDate,
                 MinStartDate = query.MinStartDate,
                 MaxEndDate = query.MaxEndDate,
@@ -874,7 +874,7 @@ namespace Emby.Server.Implementations.LiveTv
 
             var internalQuery = new InternalItemsQuery(user)
             {
-                IncludeItemTypes = new[] { nameof(LiveTvProgram) },
+                IncludeItemTypes = new[] { BaseItemKind.LiveTvProgram },
                 IsAiring = query.IsAiring,
                 HasAired = query.HasAired,
                 IsNews = query.IsNews,
@@ -1085,8 +1085,8 @@ namespace Emby.Server.Implementations.LiveTv
 
             if (cleanDatabase)
             {
-                CleanDatabaseInternal(newChannelIdList.ToArray(), new[] { nameof(LiveTvChannel) }, progress, cancellationToken);
-                CleanDatabaseInternal(newProgramIdList.ToArray(), new[] { nameof(LiveTvProgram) }, progress, cancellationToken);
+                CleanDatabaseInternal(newChannelIdList.ToArray(), new[] { BaseItemKind.LiveTvChannel }, progress, cancellationToken);
+                CleanDatabaseInternal(newProgramIdList.ToArray(), new[] { BaseItemKind.LiveTvProgram }, progress, cancellationToken);
             }
 
             var coreService = _services.OfType<EmbyTV.EmbyTV>().FirstOrDefault();
@@ -1177,7 +1177,7 @@ namespace Emby.Server.Implementations.LiveTv
 
                     var existingPrograms = _libraryManager.GetItemList(new InternalItemsQuery
                     {
-                        IncludeItemTypes = new string[] { nameof(LiveTvProgram) },
+                        IncludeItemTypes = new[] { BaseItemKind.LiveTvProgram },
                         ChannelIds = new Guid[] { currentChannel.Id },
                         DtoOptions = new DtoOptions(true)
                     }).Cast<LiveTvProgram>().ToDictionary(i => i.Id);
@@ -1261,7 +1261,7 @@ namespace Emby.Server.Implementations.LiveTv
             return new Tuple<List<Guid>, List<Guid>>(channels, programs);
         }
 
-        private void CleanDatabaseInternal(Guid[] currentIdList, string[] validTypes, IProgress<double> progress, CancellationToken cancellationToken)
+        private void CleanDatabaseInternal(Guid[] currentIdList, BaseItemKind[] validTypes, IProgress<double> progress, CancellationToken cancellationToken)
         {
             var list = _itemRepo.GetItemIdsList(new InternalItemsQuery
             {
@@ -1328,25 +1328,25 @@ namespace Emby.Server.Implementations.LiveTv
                 .Select(i => i.Id)
                 .ToList();
 
-            var excludeItemTypes = new List<string>();
+            var excludeItemTypes = new List<BaseItemKind>();
 
             if (folderIds.Count == 0)
             {
                 return new QueryResult<BaseItem>();
             }
 
-            var includeItemTypes = new List<string>();
+            var includeItemTypes = new List<BaseItemKind>();
             var genres = new List<string>();
 
             if (query.IsMovie.HasValue)
             {
                 if (query.IsMovie.Value)
                 {
-                    includeItemTypes.Add(nameof(Movie));
+                    includeItemTypes.Add(BaseItemKind.Movie);
                 }
                 else
                 {
-                    excludeItemTypes.Add(nameof(Movie));
+                    excludeItemTypes.Add(BaseItemKind.Movie);
                 }
             }
 
@@ -1354,11 +1354,11 @@ namespace Emby.Server.Implementations.LiveTv
             {
                 if (query.IsSeries.Value)
                 {
-                    includeItemTypes.Add(nameof(Episode));
+                    includeItemTypes.Add(BaseItemKind.Episode);
                 }
                 else
                 {
-                    excludeItemTypes.Add(nameof(Episode));
+                    excludeItemTypes.Add(BaseItemKind.Episode);
                 }
             }
 
@@ -1878,7 +1878,7 @@ namespace Emby.Server.Implementations.LiveTv
 
             var programs = options.AddCurrentProgram ? _libraryManager.GetItemList(new InternalItemsQuery(user)
             {
-                IncludeItemTypes = new[] { nameof(LiveTvProgram) },
+                IncludeItemTypes = new[] { BaseItemKind.LiveTvProgram },
                 ChannelIds = channelIds,
                 MaxStartDate = now,
                 MinEndDate = now,
diff --git a/Emby.Server.Implementations/Playlists/PlaylistsFolder.cs b/Emby.Server.Implementations/Playlists/PlaylistsFolder.cs
index 8b1cee89d..8ec9f6161 100644
--- a/Emby.Server.Implementations/Playlists/PlaylistsFolder.cs
+++ b/Emby.Server.Implementations/Playlists/PlaylistsFolder.cs
@@ -4,6 +4,7 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Text.Json.Serialization;
 using Jellyfin.Data.Entities;
+using Jellyfin.Data.Enums;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Playlists;
 using MediaBrowser.Model.Querying;
@@ -45,7 +46,7 @@ namespace Emby.Server.Implementations.Playlists
             }
 
             query.Recursive = true;
-            query.IncludeItemTypes = new[] { "Playlist" };
+            query.IncludeItemTypes = new[] { BaseItemKind.Playlist };
             query.Parent = null;
             return LibraryManager.GetItemsResult(query);
         }
diff --git a/Emby.Server.Implementations/Session/SessionManager.cs b/Emby.Server.Implementations/Session/SessionManager.cs
index 341d2c8e6..d10a24bbc 100644
--- a/Emby.Server.Implementations/Session/SessionManager.cs
+++ b/Emby.Server.Implementations/Session/SessionManager.cs
@@ -1292,7 +1292,7 @@ namespace Emby.Server.Implementations.Session
                 {
                     ["ItemId"] = command.ItemId,
                     ["ItemName"] = command.ItemName,
-                    ["ItemType"] = command.ItemType
+                    ["ItemType"] = command.ItemType.ToString()
                 }
             };
 
diff --git a/Emby.Server.Implementations/TV/TVSeriesManager.cs b/Emby.Server.Implementations/TV/TVSeriesManager.cs
index 4d990c871..a87831294 100644
--- a/Emby.Server.Implementations/TV/TVSeriesManager.cs
+++ b/Emby.Server.Implementations/TV/TVSeriesManager.cs
@@ -116,7 +116,7 @@ namespace Emby.Server.Implementations.TV
                 .GetItemList(
                     new InternalItemsQuery(user)
                     {
-                        IncludeItemTypes = new[] { nameof(Episode) },
+                        IncludeItemTypes = new[] { BaseItemKind.Episode },
                         OrderBy = new[] { new ValueTuple<string, SortOrder>(ItemSortBy.DatePlayed, SortOrder.Descending) },
                         SeriesPresentationUniqueKey = presentationUniqueKey,
                         Limit = limit,
@@ -191,7 +191,7 @@ namespace Emby.Server.Implementations.TV
             {
                 AncestorWithPresentationUniqueKey = null,
                 SeriesPresentationUniqueKey = seriesKey,
-                IncludeItemTypes = new[] { nameof(Episode) },
+                IncludeItemTypes = new[] { BaseItemKind.Episode },
                 OrderBy = new[] { new ValueTuple<string, SortOrder>(ItemSortBy.SortName, SortOrder.Descending) },
                 IsPlayed = true,
                 Limit = 1,
@@ -209,7 +209,7 @@ namespace Emby.Server.Implementations.TV
                 {
                     AncestorWithPresentationUniqueKey = null,
                     SeriesPresentationUniqueKey = seriesKey,
-                    IncludeItemTypes = new[] { nameof(Episode) },
+                    IncludeItemTypes = new[] { BaseItemKind.Episode },
                     OrderBy = new[] { new ValueTuple<string, SortOrder>(ItemSortBy.SortName, SortOrder.Ascending) },
                     Limit = 1,
                     IsPlayed = false,
@@ -226,7 +226,7 @@ namespace Emby.Server.Implementations.TV
                         AncestorWithPresentationUniqueKey = null,
                         SeriesPresentationUniqueKey = seriesKey,
                         ParentIndexNumber = 0,
-                        IncludeItemTypes = new[] { nameof(Episode) },
+                        IncludeItemTypes = new[] { BaseItemKind.Episode },
                         IsPlayed = false,
                         IsVirtualItem = false,
                         DtoOptions = dtoOptions
diff --git a/Jellyfin.Api/Controllers/ArtistsController.cs b/Jellyfin.Api/Controllers/ArtistsController.cs
index 154a56702..3df975563 100644
--- a/Jellyfin.Api/Controllers/ArtistsController.cs
+++ b/Jellyfin.Api/Controllers/ArtistsController.cs
@@ -133,8 +133,8 @@ namespace Jellyfin.Api.Controllers
 
             var query = new InternalItemsQuery(user)
             {
-                ExcludeItemTypes = RequestHelpers.GetItemTypeStrings(excludeItemTypes),
-                IncludeItemTypes = RequestHelpers.GetItemTypeStrings(includeItemTypes),
+                ExcludeItemTypes = excludeItemTypes,
+                IncludeItemTypes = includeItemTypes,
                 MediaTypes = mediaTypes,
                 StartIndex = startIndex,
                 Limit = limit,
@@ -337,8 +337,8 @@ namespace Jellyfin.Api.Controllers
 
             var query = new InternalItemsQuery(user)
             {
-                ExcludeItemTypes = RequestHelpers.GetItemTypeStrings(excludeItemTypes),
-                IncludeItemTypes = RequestHelpers.GetItemTypeStrings(includeItemTypes),
+                ExcludeItemTypes = excludeItemTypes,
+                IncludeItemTypes = includeItemTypes,
                 MediaTypes = mediaTypes,
                 StartIndex = startIndex,
                 Limit = limit,
diff --git a/Jellyfin.Api/Controllers/FilterController.cs b/Jellyfin.Api/Controllers/FilterController.cs
index 223b2a2b6..02a0785e7 100644
--- a/Jellyfin.Api/Controllers/FilterController.cs
+++ b/Jellyfin.Api/Controllers/FilterController.cs
@@ -71,7 +71,7 @@ namespace Jellyfin.Api.Controllers
             {
                 User = user,
                 MediaTypes = mediaTypes,
-                IncludeItemTypes = RequestHelpers.GetItemTypeStrings(includeItemTypes),
+                IncludeItemTypes = includeItemTypes,
                 Recursive = true,
                 EnableTotalRecordCount = false,
                 DtoOptions = new DtoOptions
@@ -166,7 +166,7 @@ namespace Jellyfin.Api.Controllers
             var filters = new QueryFilters();
             var genreQuery = new InternalItemsQuery(user)
             {
-                IncludeItemTypes = RequestHelpers.GetItemTypeStrings(includeItemTypes),
+                IncludeItemTypes = includeItemTypes,
                 DtoOptions = new DtoOptions
                 {
                     Fields = Array.Empty<ItemFields>(),
diff --git a/Jellyfin.Api/Controllers/GenresController.cs b/Jellyfin.Api/Controllers/GenresController.cs
index 5aa457153..37e6ae184 100644
--- a/Jellyfin.Api/Controllers/GenresController.cs
+++ b/Jellyfin.Api/Controllers/GenresController.cs
@@ -101,8 +101,8 @@ namespace Jellyfin.Api.Controllers
 
             var query = new InternalItemsQuery(user)
             {
-                ExcludeItemTypes = RequestHelpers.GetItemTypeStrings(excludeItemTypes),
-                IncludeItemTypes = RequestHelpers.GetItemTypeStrings(includeItemTypes),
+                ExcludeItemTypes = excludeItemTypes,
+                IncludeItemTypes = includeItemTypes,
                 StartIndex = startIndex,
                 Limit = limit,
                 IsFavorite = isFavorite,
@@ -160,7 +160,7 @@ namespace Jellyfin.Api.Controllers
             Genre item = new Genre();
             if (genreName.IndexOf(BaseItem.SlugChar, StringComparison.OrdinalIgnoreCase) != -1)
             {
-                var result = GetItemFromSlugName<Genre>(_libraryManager, genreName, dtoOptions);
+                var result = GetItemFromSlugName<Genre>(_libraryManager, genreName, dtoOptions, BaseItemKind.Genre);
 
                 if (result != null)
                 {
@@ -182,27 +182,27 @@ namespace Jellyfin.Api.Controllers
             return _dtoService.GetBaseItemDto(item, dtoOptions);
         }
 
-        private T? GetItemFromSlugName<T>(ILibraryManager libraryManager, string name, DtoOptions dtoOptions)
+        private T? GetItemFromSlugName<T>(ILibraryManager libraryManager, string name, DtoOptions dtoOptions, BaseItemKind baseItemKind)
             where T : BaseItem, new()
         {
             var result = libraryManager.GetItemList(new InternalItemsQuery
             {
                 Name = name.Replace(BaseItem.SlugChar, '&'),
-                IncludeItemTypes = new[] { typeof(T).Name },
+                IncludeItemTypes = new[] { baseItemKind },
                 DtoOptions = dtoOptions
             }).OfType<T>().FirstOrDefault();
 
             result ??= libraryManager.GetItemList(new InternalItemsQuery
             {
                 Name = name.Replace(BaseItem.SlugChar, '/'),
-                IncludeItemTypes = new[] { typeof(T).Name },
+                IncludeItemTypes = new[] { baseItemKind },
                 DtoOptions = dtoOptions
             }).OfType<T>().FirstOrDefault();
 
             result ??= libraryManager.GetItemList(new InternalItemsQuery
             {
                 Name = name.Replace(BaseItem.SlugChar, '?'),
-                IncludeItemTypes = new[] { typeof(T).Name },
+                IncludeItemTypes = new[] { baseItemKind },
                 DtoOptions = dtoOptions
             }).OfType<T>().FirstOrDefault();
 
diff --git a/Jellyfin.Api/Controllers/ItemsController.cs b/Jellyfin.Api/Controllers/ItemsController.cs
index 45a36c8fe..22e3fd202 100644
--- a/Jellyfin.Api/Controllers/ItemsController.cs
+++ b/Jellyfin.Api/Controllers/ItemsController.cs
@@ -296,8 +296,8 @@ namespace Jellyfin.Api.Controllers
                 {
                     IsPlayed = isPlayed,
                     MediaTypes = mediaTypes,
-                    IncludeItemTypes = RequestHelpers.GetItemTypeStrings(includeItemTypes),
-                    ExcludeItemTypes = RequestHelpers.GetItemTypeStrings(excludeItemTypes),
+                    IncludeItemTypes = includeItemTypes,
+                    ExcludeItemTypes = excludeItemTypes,
                     Recursive = recursive ?? false,
                     OrderBy = RequestHelpers.GetOrderBy(sortBy, sortOrder),
                     IsFavorite = isFavorite,
@@ -459,7 +459,7 @@ namespace Jellyfin.Api.Controllers
                 {
                     query.AlbumIds = albums.SelectMany(i =>
                     {
-                        return _libraryManager.GetItemIds(new InternalItemsQuery { IncludeItemTypes = new[] { nameof(MusicAlbum) }, Name = i, Limit = 1 });
+                        return _libraryManager.GetItemIds(new InternalItemsQuery { IncludeItemTypes = new[] { BaseItemKind.MusicAlbum }, Name = i, Limit = 1 });
                     }).ToArray();
                 }
 
@@ -483,7 +483,7 @@ namespace Jellyfin.Api.Controllers
                 if (query.OrderBy.Count == 0)
                 {
                     // Albums by artist
-                    if (query.ArtistIds.Length > 0 && query.IncludeItemTypes.Length == 1 && string.Equals(query.IncludeItemTypes[0], "MusicAlbum", StringComparison.OrdinalIgnoreCase))
+                    if (query.ArtistIds.Length > 0 && query.IncludeItemTypes.Length == 1 && query.IncludeItemTypes[0] == BaseItemKind.MusicAlbum)
                     {
                         query.OrderBy = new[] { new ValueTuple<string, SortOrder>(ItemSortBy.ProductionYear, SortOrder.Descending), new ValueTuple<string, SortOrder>(ItemSortBy.SortName, SortOrder.Ascending) };
                     }
@@ -831,8 +831,8 @@ namespace Jellyfin.Api.Controllers
                 CollapseBoxSetItems = false,
                 EnableTotalRecordCount = enableTotalRecordCount,
                 AncestorIds = ancestorIds,
-                IncludeItemTypes = RequestHelpers.GetItemTypeStrings(includeItemTypes),
-                ExcludeItemTypes = RequestHelpers.GetItemTypeStrings(excludeItemTypes),
+                IncludeItemTypes = includeItemTypes,
+                ExcludeItemTypes = excludeItemTypes,
                 SearchTerm = searchTerm,
                 ExcludeItemIds = excludeItemIds
             });
diff --git a/Jellyfin.Api/Controllers/LibraryController.cs b/Jellyfin.Api/Controllers/LibraryController.cs
index 0be853ca4..d4cc3810a 100644
--- a/Jellyfin.Api/Controllers/LibraryController.cs
+++ b/Jellyfin.Api/Controllers/LibraryController.cs
@@ -14,6 +14,7 @@ using Jellyfin.Api.Extensions;
 using Jellyfin.Api.ModelBinders;
 using Jellyfin.Api.Models.LibraryDtos;
 using Jellyfin.Data.Entities;
+using Jellyfin.Data.Enums;
 using MediaBrowser.Common.Progress;
 using MediaBrowser.Controller.Configuration;
 using MediaBrowser.Controller.Dto;
@@ -413,14 +414,14 @@ namespace Jellyfin.Api.Controllers
 
             var counts = new ItemCounts
             {
-                AlbumCount = GetCount(typeof(MusicAlbum), user, isFavorite),
-                EpisodeCount = GetCount(typeof(Episode), user, isFavorite),
-                MovieCount = GetCount(typeof(Movie), user, isFavorite),
-                SeriesCount = GetCount(typeof(Series), user, isFavorite),
-                SongCount = GetCount(typeof(Audio), user, isFavorite),
-                MusicVideoCount = GetCount(typeof(MusicVideo), user, isFavorite),
-                BoxSetCount = GetCount(typeof(BoxSet), user, isFavorite),
-                BookCount = GetCount(typeof(Book), user, isFavorite)
+                AlbumCount = GetCount(BaseItemKind.MusicAlbum, user, isFavorite),
+                EpisodeCount = GetCount(BaseItemKind.Episode, user, isFavorite),
+                MovieCount = GetCount(BaseItemKind.Movie, user, isFavorite),
+                SeriesCount = GetCount(BaseItemKind.Series, user, isFavorite),
+                SongCount = GetCount(BaseItemKind.Audio, user, isFavorite),
+                MusicVideoCount = GetCount(BaseItemKind.MusicVideo, user, isFavorite),
+                BoxSetCount = GetCount(BaseItemKind.BoxSet, user, isFavorite),
+                BookCount = GetCount(BaseItemKind.Book, user, isFavorite)
             };
 
             return counts;
@@ -529,7 +530,7 @@ namespace Jellyfin.Api.Controllers
         {
             var series = _libraryManager.GetItemList(new InternalItemsQuery
             {
-                IncludeItemTypes = new[] { nameof(Series) },
+                IncludeItemTypes = new[] { BaseItemKind.Series },
                 DtoOptions = new DtoOptions(false)
                 {
                     EnableImages = false
@@ -559,7 +560,7 @@ namespace Jellyfin.Api.Controllers
         {
             var movies = _libraryManager.GetItemList(new InternalItemsQuery
             {
-                IncludeItemTypes = new[] { nameof(Movie) },
+                IncludeItemTypes = new[] { BaseItemKind.Movie },
                 DtoOptions = new DtoOptions(false)
                 {
                     EnableImages = false
@@ -715,26 +716,26 @@ namespace Jellyfin.Api.Controllers
             bool? isMovie = item is Movie || (program != null && program.IsMovie) || item is Trailer;
             bool? isSeries = item is Series || (program != null && program.IsSeries);
 
-            var includeItemTypes = new List<string>();
+            var includeItemTypes = new List<BaseItemKind>();
             if (isMovie.Value)
             {
-                includeItemTypes.Add(nameof(Movie));
+                includeItemTypes.Add(BaseItemKind.Movie);
                 if (_serverConfigurationManager.Configuration.EnableExternalContentInSuggestions)
                 {
-                    includeItemTypes.Add(nameof(Trailer));
-                    includeItemTypes.Add(nameof(LiveTvProgram));
+                    includeItemTypes.Add(BaseItemKind.Trailer);
+                    includeItemTypes.Add(BaseItemKind.LiveTvProgram);
                 }
             }
             else if (isSeries.Value)
             {
-                includeItemTypes.Add(nameof(Series));
+                includeItemTypes.Add(BaseItemKind.Series);
             }
             else
             {
                 // For non series and movie types these columns are typically null
                 isSeries = null;
                 isMovie = null;
-                includeItemTypes.Add(item.GetType().Name);
+                includeItemTypes.Add(item.GetBaseItemKind());
             }
 
             var query = new InternalItemsQuery(user)
@@ -871,11 +872,11 @@ namespace Jellyfin.Api.Controllers
             return result;
         }
 
-        private int GetCount(Type type, User? user, bool? isFavorite)
+        private int GetCount(BaseItemKind itemKind, User? user, bool? isFavorite)
         {
             var query = new InternalItemsQuery(user)
             {
-                IncludeItemTypes = new[] { type.Name },
+                IncludeItemTypes = new[] { itemKind },
                 Limit = 0,
                 Recursive = true,
                 IsVirtualItem = false,
diff --git a/Jellyfin.Api/Controllers/MoviesController.cs b/Jellyfin.Api/Controllers/MoviesController.cs
index 99c90d19e..def10f0bd 100644
--- a/Jellyfin.Api/Controllers/MoviesController.cs
+++ b/Jellyfin.Api/Controllers/MoviesController.cs
@@ -84,7 +84,7 @@ namespace Jellyfin.Api.Controllers
             {
                 IncludeItemTypes = new[]
                 {
-                    nameof(Movie),
+                    BaseItemKind.Movie,
                     // nameof(Trailer),
                     // nameof(LiveTvProgram)
                 },
@@ -99,11 +99,11 @@ namespace Jellyfin.Api.Controllers
 
             var recentlyPlayedMovies = _libraryManager.GetItemList(query);
 
-            var itemTypes = new List<string> { nameof(Movie) };
+            var itemTypes = new List<BaseItemKind> { BaseItemKind.Movie };
             if (_serverConfigurationManager.Configuration.EnableExternalContentInSuggestions)
             {
-                itemTypes.Add(nameof(Trailer));
-                itemTypes.Add(nameof(LiveTvProgram));
+                itemTypes.Add(BaseItemKind.Trailer);
+                itemTypes.Add(BaseItemKind.LiveTvProgram);
             }
 
             var likedMovies = _libraryManager.GetItemList(new InternalItemsQuery(user)
@@ -182,11 +182,11 @@ namespace Jellyfin.Api.Controllers
             DtoOptions dtoOptions,
             RecommendationType type)
         {
-            var itemTypes = new List<string> { nameof(Movie) };
+            var itemTypes = new List<BaseItemKind> { BaseItemKind.Movie };
             if (_serverConfigurationManager.Configuration.EnableExternalContentInSuggestions)
             {
-                itemTypes.Add(nameof(Trailer));
-                itemTypes.Add(nameof(LiveTvProgram));
+                itemTypes.Add(BaseItemKind.Trailer);
+                itemTypes.Add(BaseItemKind.LiveTvProgram);
             }
 
             foreach (var name in names)
@@ -224,11 +224,11 @@ namespace Jellyfin.Api.Controllers
 
         private IEnumerable<RecommendationDto> GetWithActor(User? user, IEnumerable<string> names, int itemLimit, DtoOptions dtoOptions, RecommendationType type)
         {
-            var itemTypes = new List<string> { nameof(Movie) };
+            var itemTypes = new List<BaseItemKind> { BaseItemKind.Movie };
             if (_serverConfigurationManager.Configuration.EnableExternalContentInSuggestions)
             {
-                itemTypes.Add(nameof(Trailer));
-                itemTypes.Add(nameof(LiveTvProgram));
+                itemTypes.Add(BaseItemKind.Trailer);
+                itemTypes.Add(BaseItemKind.LiveTvProgram);
             }
 
             foreach (var name in names)
@@ -264,11 +264,11 @@ namespace Jellyfin.Api.Controllers
 
         private IEnumerable<RecommendationDto> GetSimilarTo(User? user, IEnumerable<BaseItem> baselineItems, int itemLimit, DtoOptions dtoOptions, RecommendationType type)
         {
-            var itemTypes = new List<string> { nameof(Movie) };
+            var itemTypes = new List<BaseItemKind> { BaseItemKind.Movie };
             if (_serverConfigurationManager.Configuration.EnableExternalContentInSuggestions)
             {
-                itemTypes.Add(nameof(Trailer));
-                itemTypes.Add(nameof(LiveTvProgram));
+                itemTypes.Add(BaseItemKind.Trailer);
+                itemTypes.Add(BaseItemKind.LiveTvProgram);
             }
 
             foreach (var item in baselineItems)
diff --git a/Jellyfin.Api/Controllers/MusicGenresController.cs b/Jellyfin.Api/Controllers/MusicGenresController.cs
index 27eec2b9a..c4c03aa4f 100644
--- a/Jellyfin.Api/Controllers/MusicGenresController.cs
+++ b/Jellyfin.Api/Controllers/MusicGenresController.cs
@@ -101,8 +101,8 @@ namespace Jellyfin.Api.Controllers
 
             var query = new InternalItemsQuery(user)
             {
-                ExcludeItemTypes = RequestHelpers.GetItemTypeStrings(excludeItemTypes),
-                IncludeItemTypes = RequestHelpers.GetItemTypeStrings(includeItemTypes),
+                ExcludeItemTypes = excludeItemTypes,
+                IncludeItemTypes = includeItemTypes,
                 StartIndex = startIndex,
                 Limit = limit,
                 IsFavorite = isFavorite,
@@ -149,7 +149,7 @@ namespace Jellyfin.Api.Controllers
 
             if (genreName.IndexOf(BaseItem.SlugChar, StringComparison.OrdinalIgnoreCase) != -1)
             {
-                item = GetItemFromSlugName<MusicGenre>(_libraryManager, genreName, dtoOptions);
+                item = GetItemFromSlugName<MusicGenre>(_libraryManager, genreName, dtoOptions, BaseItemKind.MusicGenre);
             }
             else
             {
@@ -166,27 +166,27 @@ namespace Jellyfin.Api.Controllers
             return _dtoService.GetBaseItemDto(item, dtoOptions);
         }
 
-        private T? GetItemFromSlugName<T>(ILibraryManager libraryManager, string name, DtoOptions dtoOptions)
+        private T? GetItemFromSlugName<T>(ILibraryManager libraryManager, string name, DtoOptions dtoOptions, BaseItemKind baseItemKind)
             where T : BaseItem, new()
         {
             var result = libraryManager.GetItemList(new InternalItemsQuery
             {
                 Name = name.Replace(BaseItem.SlugChar, '&'),
-                IncludeItemTypes = new[] { typeof(T).Name },
+                IncludeItemTypes = new[] { baseItemKind },
                 DtoOptions = dtoOptions
             }).OfType<T>().FirstOrDefault();
 
             result ??= libraryManager.GetItemList(new InternalItemsQuery
             {
                 Name = name.Replace(BaseItem.SlugChar, '/'),
-                IncludeItemTypes = new[] { typeof(T).Name },
+                IncludeItemTypes = new[] { baseItemKind },
                 DtoOptions = dtoOptions
             }).OfType<T>().FirstOrDefault();
 
             result ??= libraryManager.GetItemList(new InternalItemsQuery
             {
                 Name = name.Replace(BaseItem.SlugChar, '?'),
-                IncludeItemTypes = new[] { typeof(T).Name },
+                IncludeItemTypes = new[] { baseItemKind },
                 DtoOptions = dtoOptions
             }).OfType<T>().FirstOrDefault();
 
diff --git a/Jellyfin.Api/Controllers/SearchController.cs b/Jellyfin.Api/Controllers/SearchController.cs
index 73bdf9018..02ee7860f 100644
--- a/Jellyfin.Api/Controllers/SearchController.cs
+++ b/Jellyfin.Api/Controllers/SearchController.cs
@@ -110,8 +110,8 @@ namespace Jellyfin.Api.Controllers
                 IncludeStudios = includeStudios,
                 StartIndex = startIndex,
                 UserId = userId ?? Guid.Empty,
-                IncludeItemTypes = RequestHelpers.GetItemTypeStrings(includeItemTypes),
-                ExcludeItemTypes = RequestHelpers.GetItemTypeStrings(excludeItemTypes),
+                IncludeItemTypes = includeItemTypes,
+                ExcludeItemTypes = excludeItemTypes,
                 MediaTypes = mediaTypes,
                 ParentId = parentId,
 
diff --git a/Jellyfin.Api/Controllers/SessionController.cs b/Jellyfin.Api/Controllers/SessionController.cs
index 3a04cb3a4..a6bbd40cc 100644
--- a/Jellyfin.Api/Controllers/SessionController.cs
+++ b/Jellyfin.Api/Controllers/SessionController.cs
@@ -127,7 +127,7 @@ namespace Jellyfin.Api.Controllers
         [ProducesResponseType(StatusCodes.Status204NoContent)]
         public async Task<ActionResult> DisplayContent(
             [FromRoute, Required] string sessionId,
-            [FromQuery, Required] string itemType,
+            [FromQuery, Required] BaseItemKind itemType,
             [FromQuery, Required] string itemId,
             [FromQuery, Required] string itemName)
         {
diff --git a/Jellyfin.Api/Controllers/StudiosController.cs b/Jellyfin.Api/Controllers/StudiosController.cs
index da8f8b199..4422ef32c 100644
--- a/Jellyfin.Api/Controllers/StudiosController.cs
+++ b/Jellyfin.Api/Controllers/StudiosController.cs
@@ -97,8 +97,8 @@ namespace Jellyfin.Api.Controllers
 
             var query = new InternalItemsQuery(user)
             {
-                ExcludeItemTypes = RequestHelpers.GetItemTypeStrings(excludeItemTypes),
-                IncludeItemTypes = RequestHelpers.GetItemTypeStrings(includeItemTypes),
+                ExcludeItemTypes = excludeItemTypes,
+                IncludeItemTypes = includeItemTypes,
                 StartIndex = startIndex,
                 Limit = limit,
                 IsFavorite = isFavorite,
diff --git a/Jellyfin.Api/Controllers/SuggestionsController.cs b/Jellyfin.Api/Controllers/SuggestionsController.cs
index 97eec4bd2..af77c801f 100644
--- a/Jellyfin.Api/Controllers/SuggestionsController.cs
+++ b/Jellyfin.Api/Controllers/SuggestionsController.cs
@@ -58,7 +58,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult<QueryResult<BaseItemDto>> GetSuggestions(
             [FromRoute, Required] Guid userId,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] mediaType,
-            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] type,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] BaseItemKind[] type,
             [FromQuery] int? startIndex,
             [FromQuery] int? limit,
             [FromQuery] bool enableTotalRecordCount = false)
diff --git a/Jellyfin.Api/Controllers/TvShowsController.cs b/Jellyfin.Api/Controllers/TvShowsController.cs
index 5dd773331..f47e71bd1 100644
--- a/Jellyfin.Api/Controllers/TvShowsController.cs
+++ b/Jellyfin.Api/Controllers/TvShowsController.cs
@@ -157,7 +157,7 @@ namespace Jellyfin.Api.Controllers
 
             var itemsResult = _libraryManager.GetItemList(new InternalItemsQuery(user)
             {
-                IncludeItemTypes = new[] { nameof(Episode) },
+                IncludeItemTypes = new[] { BaseItemKind.Episode },
                 OrderBy = new[] { (ItemSortBy.PremiereDate, SortOrder.Ascending), (ItemSortBy.SortName, SortOrder.Ascending) },
                 MinPremiereDate = minPremiereDate,
                 StartIndex = startIndex,
diff --git a/Jellyfin.Api/Controllers/UserLibraryController.cs b/Jellyfin.Api/Controllers/UserLibraryController.cs
index a33a0826c..7e182d0e8 100644
--- a/Jellyfin.Api/Controllers/UserLibraryController.cs
+++ b/Jellyfin.Api/Controllers/UserLibraryController.cs
@@ -297,7 +297,7 @@ namespace Jellyfin.Api.Controllers
                 new LatestItemsQuery
                 {
                     GroupItems = groupItems,
-                    IncludeItemTypes = RequestHelpers.GetItemTypeStrings(includeItemTypes),
+                    IncludeItemTypes = includeItemTypes,
                     IsPlayed = isPlayed,
                     Limit = limit,
                     ParentId = parentId ?? Guid.Empty,
diff --git a/Jellyfin.Api/Controllers/YearsController.cs b/Jellyfin.Api/Controllers/YearsController.cs
index d6dc6650c..2bba2b97d 100644
--- a/Jellyfin.Api/Controllers/YearsController.cs
+++ b/Jellyfin.Api/Controllers/YearsController.cs
@@ -101,8 +101,8 @@ namespace Jellyfin.Api.Controllers
 
             var query = new InternalItemsQuery(user)
             {
-                ExcludeItemTypes = RequestHelpers.GetItemTypeStrings(excludeItemTypes),
-                IncludeItemTypes = RequestHelpers.GetItemTypeStrings(includeItemTypes),
+                ExcludeItemTypes = excludeItemTypes,
+                IncludeItemTypes = includeItemTypes,
                 MediaTypes = mediaTypes,
                 DtoOptions = dtoOptions
             };
diff --git a/Jellyfin.Api/Helpers/RequestHelpers.cs b/Jellyfin.Api/Helpers/RequestHelpers.cs
index 0efd3443b..ca8bc0bdd 100644
--- a/Jellyfin.Api/Helpers/RequestHelpers.cs
+++ b/Jellyfin.Api/Helpers/RequestHelpers.cs
@@ -137,21 +137,5 @@ namespace Jellyfin.Api.Helpers
                 TotalRecordCount = result.TotalRecordCount
             };
         }
-
-        internal static string[] GetItemTypeStrings(IReadOnlyList<BaseItemKind> itemKinds)
-        {
-            if (itemKinds.Count == 0)
-            {
-                return Array.Empty<string>();
-            }
-
-            var itemTypes = new string[itemKinds.Count];
-            for (var i = 0; i < itemKinds.Count; i++)
-            {
-                itemTypes[i] = itemKinds[i].ToString();
-            }
-
-            return itemTypes;
-        }
     }
 }
diff --git a/MediaBrowser.Controller/Entities/Audio/MusicArtist.cs b/MediaBrowser.Controller/Entities/Audio/MusicArtist.cs
index f30f8ce7f..11b95b94b 100644
--- a/MediaBrowser.Controller/Entities/Audio/MusicArtist.cs
+++ b/MediaBrowser.Controller/Entities/Audio/MusicArtist.cs
@@ -88,7 +88,7 @@ namespace MediaBrowser.Controller.Entities.Audio
         {
             if (query.IncludeItemTypes.Length == 0)
             {
-                query.IncludeItemTypes = new[] { nameof(Audio), nameof(MusicVideo), nameof(MusicAlbum) };
+                query.IncludeItemTypes = new[] { BaseItemKind.Audio, BaseItemKind.MusicVideo, BaseItemKind.MusicAlbum };
                 query.ArtistIds = new[] { Id };
             }
 
diff --git a/MediaBrowser.Controller/Entities/Audio/MusicGenre.cs b/MediaBrowser.Controller/Entities/Audio/MusicGenre.cs
index dc6fcc55a..73a25232e 100644
--- a/MediaBrowser.Controller/Entities/Audio/MusicGenre.cs
+++ b/MediaBrowser.Controller/Entities/Audio/MusicGenre.cs
@@ -6,6 +6,7 @@ using System;
 using System.Collections.Generic;
 using System.Text.Json.Serialization;
 using Diacritics.Extensions;
+using Jellyfin.Data.Enums;
 using Microsoft.Extensions.Logging;
 
 namespace MediaBrowser.Controller.Entities.Audio
@@ -66,7 +67,7 @@ namespace MediaBrowser.Controller.Entities.Audio
         public IList<BaseItem> GetTaggedItems(InternalItemsQuery query)
         {
             query.GenreIds = new[] { Id };
-            query.IncludeItemTypes = new[] { nameof(MusicVideo), nameof(Audio), nameof(MusicAlbum), nameof(MusicArtist) };
+            query.IncludeItemTypes = new[] { BaseItemKind.MusicVideo, BaseItemKind.Audio, BaseItemKind.MusicAlbum, BaseItemKind.MusicArtist };
 
             return LibraryManager.GetItemList(query);
         }
diff --git a/MediaBrowser.Controller/Entities/Folder.cs b/MediaBrowser.Controller/Entities/Folder.cs
index ec1ebaabe..55551e70e 100644
--- a/MediaBrowser.Controller/Entities/Folder.cs
+++ b/MediaBrowser.Controller/Entities/Folder.cs
@@ -792,7 +792,7 @@ namespace MediaBrowser.Controller.Entities
 
         private bool RequiresPostFiltering2(InternalItemsQuery query)
         {
-            if (query.IncludeItemTypes.Length == 1 && string.Equals(query.IncludeItemTypes[0], nameof(BoxSet), StringComparison.OrdinalIgnoreCase))
+            if (query.IncludeItemTypes.Length == 1 && query.IncludeItemTypes[0] == BaseItemKind.BoxSet)
             {
                 Logger.LogDebug("Query requires post-filtering due to BoxSet query");
                 return true;
@@ -882,7 +882,7 @@ namespace MediaBrowser.Controller.Entities
 
             if (query.IsPlayed.HasValue)
             {
-                if (query.IncludeItemTypes.Length == 1 && query.IncludeItemTypes.Contains(nameof(Series)))
+                if (query.IncludeItemTypes.Length == 1 && query.IncludeItemTypes.Contains(BaseItemKind.Series))
                 {
                     Logger.LogDebug("Query requires post-filtering due to IsPlayed");
                     return true;
@@ -1101,7 +1101,7 @@ namespace MediaBrowser.Controller.Entities
                     return false;
                 }
 
-                if (query.IncludeItemTypes.Length == 0 || query.IncludeItemTypes.Contains("Movie", StringComparer.OrdinalIgnoreCase))
+                if (query.IncludeItemTypes.Length == 0 || query.IncludeItemTypes.Contains(BaseItemKind.Movie))
                 {
                     param = true;
                 }
diff --git a/MediaBrowser.Controller/Entities/Genre.cs b/MediaBrowser.Controller/Entities/Genre.cs
index 338f96204..4be673237 100644
--- a/MediaBrowser.Controller/Entities/Genre.cs
+++ b/MediaBrowser.Controller/Entities/Genre.cs
@@ -6,7 +6,7 @@ using System;
 using System.Collections.Generic;
 using System.Text.Json.Serialization;
 using Diacritics.Extensions;
-using MediaBrowser.Controller.Entities.Audio;
+using Jellyfin.Data.Enums;
 using Microsoft.Extensions.Logging;
 
 namespace MediaBrowser.Controller.Entities
@@ -66,10 +66,10 @@ namespace MediaBrowser.Controller.Entities
             query.GenreIds = new[] { Id };
             query.ExcludeItemTypes = new[]
             {
-                nameof(MusicVideo),
-                nameof(Entities.Audio.Audio),
-                nameof(MusicAlbum),
-                nameof(MusicArtist)
+                BaseItemKind.MusicVideo,
+                BaseItemKind.Audio,
+                BaseItemKind.MusicAlbum,
+                BaseItemKind.MusicArtist
             };
 
             return LibraryManager.GetItemList(query);
diff --git a/MediaBrowser.Controller/Entities/InternalItemsQuery.cs b/MediaBrowser.Controller/Entities/InternalItemsQuery.cs
index 0baa7725e..f06b5c787 100644
--- a/MediaBrowser.Controller/Entities/InternalItemsQuery.cs
+++ b/MediaBrowser.Controller/Entities/InternalItemsQuery.cs
@@ -27,13 +27,13 @@ namespace MediaBrowser.Controller.Entities
             ExcludeArtistIds = Array.Empty<Guid>();
             ExcludeInheritedTags = Array.Empty<string>();
             ExcludeItemIds = Array.Empty<Guid>();
-            ExcludeItemTypes = Array.Empty<string>();
+            ExcludeItemTypes = Array.Empty<BaseItemKind>();
             ExcludeTags = Array.Empty<string>();
             GenreIds = Array.Empty<Guid>();
             Genres = Array.Empty<string>();
             GroupByPresentationUniqueKey = true;
             ImageTypes = Array.Empty<ImageType>();
-            IncludeItemTypes = Array.Empty<string>();
+            IncludeItemTypes = Array.Empty<BaseItemKind>();
             ItemIds = Array.Empty<Guid>();
             MediaTypes = Array.Empty<string>();
             MinSimilarityScore = 20;
@@ -87,9 +87,9 @@ namespace MediaBrowser.Controller.Entities
 
         public string[] MediaTypes { get; set; }
 
-        public string[] IncludeItemTypes { get; set; }
+        public BaseItemKind[] IncludeItemTypes { get; set; }
 
-        public string[] ExcludeItemTypes { get; set; }
+        public BaseItemKind[] ExcludeItemTypes { get; set; }
 
         public string[] ExcludeTags { get; set; }
 
@@ -229,7 +229,7 @@ namespace MediaBrowser.Controller.Entities
 
         public Guid ParentId { get; set; }
 
-        public string? ParentType { get; set; }
+        public BaseItemKind? ParentType { get; set; }
 
         public Guid[] AncestorIds { get; set; }
 
@@ -314,7 +314,7 @@ namespace MediaBrowser.Controller.Entities
                 else
                 {
                     ParentId = value.Id;
-                    ParentType = value.GetType().Name;
+                    ParentType = value.GetBaseItemKind();
                 }
             }
         }
diff --git a/MediaBrowser.Controller/Entities/TV/Series.cs b/MediaBrowser.Controller/Entities/TV/Series.cs
index e4933e968..dd2c464e9 100644
--- a/MediaBrowser.Controller/Entities/TV/Series.cs
+++ b/MediaBrowser.Controller/Entities/TV/Series.cs
@@ -131,7 +131,7 @@ namespace MediaBrowser.Controller.Entities.TV
             {
                 AncestorWithPresentationUniqueKey = null,
                 SeriesPresentationUniqueKey = seriesKey,
-                IncludeItemTypes = new[] { nameof(Season) },
+                IncludeItemTypes = new[] { BaseItemKind.Season },
                 IsVirtualItem = false,
                 Limit = 0,
                 DtoOptions = new DtoOptions(false)
@@ -159,7 +159,7 @@ namespace MediaBrowser.Controller.Entities.TV
 
             if (query.IncludeItemTypes.Length == 0)
             {
-                query.IncludeItemTypes = new[] { nameof(Episode) };
+                query.IncludeItemTypes = new[] { BaseItemKind.Episode };
             }
 
             query.IsVirtualItem = false;
@@ -213,7 +213,7 @@ namespace MediaBrowser.Controller.Entities.TV
 
             query.AncestorWithPresentationUniqueKey = null;
             query.SeriesPresentationUniqueKey = seriesKey;
-            query.IncludeItemTypes = new[] { nameof(Season) };
+            query.IncludeItemTypes = new[] { BaseItemKind.Season };
             query.OrderBy = new[] { (ItemSortBy.SortName, SortOrder.Ascending) };
 
             if (user != null && !user.DisplayMissingEpisodes)
@@ -239,7 +239,7 @@ namespace MediaBrowser.Controller.Entities.TV
 
                 if (query.IncludeItemTypes.Length == 0)
                 {
-                    query.IncludeItemTypes = new[] { nameof(Episode), nameof(Season) };
+                    query.IncludeItemTypes = new[] { BaseItemKind.Episode, BaseItemKind.Season };
                 }
 
                 query.IsVirtualItem = false;
@@ -259,7 +259,7 @@ namespace MediaBrowser.Controller.Entities.TV
             {
                 AncestorWithPresentationUniqueKey = null,
                 SeriesPresentationUniqueKey = seriesKey,
-                IncludeItemTypes = new[] { nameof(Episode), nameof(Season) },
+                IncludeItemTypes = new[] { BaseItemKind.Episode, BaseItemKind.Season },
                 OrderBy = new[] { (ItemSortBy.SortName, SortOrder.Ascending) },
                 DtoOptions = options
             };
@@ -363,7 +363,7 @@ namespace MediaBrowser.Controller.Entities.TV
             {
                 AncestorWithPresentationUniqueKey = queryFromSeries ? null : seriesKey,
                 SeriesPresentationUniqueKey = queryFromSeries ? seriesKey : null,
-                IncludeItemTypes = new[] { nameof(Episode) },
+                IncludeItemTypes = new[] { BaseItemKind.Episode },
                 OrderBy = new[] { (ItemSortBy.SortName, SortOrder.Ascending) },
                 DtoOptions = options
             };
diff --git a/MediaBrowser.Controller/Entities/UserViewBuilder.cs b/MediaBrowser.Controller/Entities/UserViewBuilder.cs
index 1cff72037..13ffbf535 100644
--- a/MediaBrowser.Controller/Entities/UserViewBuilder.cs
+++ b/MediaBrowser.Controller/Entities/UserViewBuilder.cs
@@ -140,7 +140,7 @@ namespace MediaBrowser.Controller.Entities
 
                 if (query.IncludeItemTypes.Length == 0)
                 {
-                    query.IncludeItemTypes = new[] { nameof(Movie) };
+                    query.IncludeItemTypes = new[] { BaseItemKind.Movie };
                 }
 
                 return parent.QueryRecursive(query);
@@ -165,7 +165,7 @@ namespace MediaBrowser.Controller.Entities
             query.Parent = parent;
             query.SetUser(user);
             query.IsFavorite = true;
-            query.IncludeItemTypes = new[] { nameof(Movie) };
+            query.IncludeItemTypes = new[] { BaseItemKind.Movie };
 
             return _libraryManager.GetItemsResult(query);
         }
@@ -176,7 +176,7 @@ namespace MediaBrowser.Controller.Entities
             query.Parent = parent;
             query.SetUser(user);
             query.IsFavorite = true;
-            query.IncludeItemTypes = new[] { nameof(Series) };
+            query.IncludeItemTypes = new[] { BaseItemKind.Series };
 
             return _libraryManager.GetItemsResult(query);
         }
@@ -187,7 +187,7 @@ namespace MediaBrowser.Controller.Entities
             query.Parent = parent;
             query.SetUser(user);
             query.IsFavorite = true;
-            query.IncludeItemTypes = new[] { nameof(Episode) };
+            query.IncludeItemTypes = new[] { BaseItemKind.Episode };
 
             return _libraryManager.GetItemsResult(query);
         }
@@ -198,7 +198,7 @@ namespace MediaBrowser.Controller.Entities
             query.Parent = parent;
             query.SetUser(user);
 
-            query.IncludeItemTypes = new[] { nameof(Movie) };
+            query.IncludeItemTypes = new[] { BaseItemKind.Movie };
 
             return _libraryManager.GetItemsResult(query);
         }
@@ -206,7 +206,7 @@ namespace MediaBrowser.Controller.Entities
         private QueryResult<BaseItem> GetMovieCollections(User user, InternalItemsQuery query)
         {
             query.Parent = null;
-            query.IncludeItemTypes = new[] { nameof(BoxSet) };
+            query.IncludeItemTypes = new[] { BaseItemKind.BoxSet };
             query.SetUser(user);
             query.Recursive = true;
 
@@ -220,7 +220,7 @@ namespace MediaBrowser.Controller.Entities
             query.Parent = parent;
             query.SetUser(user);
             query.Limit = GetSpecialItemsLimit();
-            query.IncludeItemTypes = new[] { nameof(Movie) };
+            query.IncludeItemTypes = new[] { BaseItemKind.Movie };
 
             return ConvertToResult(_libraryManager.GetItemList(query));
         }
@@ -233,7 +233,7 @@ namespace MediaBrowser.Controller.Entities
             query.Parent = parent;
             query.SetUser(user);
             query.Limit = GetSpecialItemsLimit();
-            query.IncludeItemTypes = new[] { nameof(Movie) };
+            query.IncludeItemTypes = new[] { BaseItemKind.Movie };
 
             return ConvertToResult(_libraryManager.GetItemList(query));
         }
@@ -252,7 +252,7 @@ namespace MediaBrowser.Controller.Entities
         {
             var genres = parent.QueryRecursive(new InternalItemsQuery(user)
             {
-                IncludeItemTypes = new[] { nameof(Movie) },
+                IncludeItemTypes = new[] { BaseItemKind.Movie },
                 Recursive = true,
                 EnableTotalRecordCount = false
             }).Items
@@ -283,7 +283,7 @@ namespace MediaBrowser.Controller.Entities
             query.GenreIds = new[] { displayParent.Id };
             query.SetUser(user);
 
-            query.IncludeItemTypes = new[] { nameof(Movie) };
+            query.IncludeItemTypes = new[] { BaseItemKind.Movie };
 
             return _libraryManager.GetItemsResult(query);
         }
@@ -299,9 +299,9 @@ namespace MediaBrowser.Controller.Entities
                 {
                     query.IncludeItemTypes = new[]
                     {
-                        nameof(Series),
-                        nameof(Season),
-                        nameof(Episode)
+                        BaseItemKind.Series,
+                        BaseItemKind.Season,
+                        BaseItemKind.Episode
                     };
                 }
 
@@ -329,7 +329,7 @@ namespace MediaBrowser.Controller.Entities
             query.Parent = parent;
             query.SetUser(user);
             query.Limit = GetSpecialItemsLimit();
-            query.IncludeItemTypes = new[] { nameof(Episode) };
+            query.IncludeItemTypes = new[] { BaseItemKind.Episode };
             query.IsVirtualItem = false;
 
             return ConvertToResult(_libraryManager.GetItemList(query));
@@ -360,7 +360,7 @@ namespace MediaBrowser.Controller.Entities
             query.Parent = parent;
             query.SetUser(user);
             query.Limit = GetSpecialItemsLimit();
-            query.IncludeItemTypes = new[] { nameof(Episode) };
+            query.IncludeItemTypes = new[] { BaseItemKind.Episode };
 
             return ConvertToResult(_libraryManager.GetItemList(query));
         }
@@ -371,7 +371,7 @@ namespace MediaBrowser.Controller.Entities
             query.Parent = parent;
             query.SetUser(user);
 
-            query.IncludeItemTypes = new[] { nameof(Series) };
+            query.IncludeItemTypes = new[] { BaseItemKind.Series };
 
             return _libraryManager.GetItemsResult(query);
         }
@@ -380,7 +380,7 @@ namespace MediaBrowser.Controller.Entities
         {
             var genres = parent.QueryRecursive(new InternalItemsQuery(user)
             {
-                IncludeItemTypes = new[] { nameof(Series) },
+                IncludeItemTypes = new[] { BaseItemKind.Series },
                 Recursive = true,
                 EnableTotalRecordCount = false
             }).Items
@@ -411,7 +411,7 @@ namespace MediaBrowser.Controller.Entities
             query.GenreIds = new[] { displayParent.Id };
             query.SetUser(user);
 
-            query.IncludeItemTypes = new[] { nameof(Series) };
+            query.IncludeItemTypes = new[] { BaseItemKind.Series };
 
             return _libraryManager.GetItemsResult(query);
         }
@@ -499,12 +499,12 @@ namespace MediaBrowser.Controller.Entities
                 return false;
             }
 
-            if (query.IncludeItemTypes.Length > 0 && !query.IncludeItemTypes.Contains(item.GetClientTypeName(), StringComparer.OrdinalIgnoreCase))
+            if (query.IncludeItemTypes.Length > 0 && !query.IncludeItemTypes.Contains(item.GetBaseItemKind()))
             {
                 return false;
             }
 
-            if (query.ExcludeItemTypes.Length > 0 && query.ExcludeItemTypes.Contains(item.GetClientTypeName(), StringComparer.OrdinalIgnoreCase))
+            if (query.ExcludeItemTypes.Length > 0 && query.ExcludeItemTypes.Contains(item.GetBaseItemKind()))
             {
                 return false;
             }
diff --git a/MediaBrowser.Controller/Playlists/Playlist.cs b/MediaBrowser.Controller/Playlists/Playlist.cs
index 5e671a725..89f3bdf46 100644
--- a/MediaBrowser.Controller/Playlists/Playlist.cs
+++ b/MediaBrowser.Controller/Playlists/Playlist.cs
@@ -189,7 +189,7 @@ namespace MediaBrowser.Controller.Playlists
                 return LibraryManager.GetItemList(new InternalItemsQuery(user)
                 {
                     Recursive = true,
-                    IncludeItemTypes = new[] { nameof(Audio) },
+                    IncludeItemTypes = new[] { BaseItemKind.Audio },
                     GenreIds = new[] { musicGenre.Id },
                     OrderBy = new[] { (ItemSortBy.AlbumArtist, SortOrder.Ascending), (ItemSortBy.Album, SortOrder.Ascending), (ItemSortBy.SortName, SortOrder.Ascending) },
                     DtoOptions = options
@@ -201,7 +201,7 @@ namespace MediaBrowser.Controller.Playlists
                 return LibraryManager.GetItemList(new InternalItemsQuery(user)
                 {
                     Recursive = true,
-                    IncludeItemTypes = new[] { nameof(Audio) },
+                    IncludeItemTypes = new[] { BaseItemKind.Audio },
                     ArtistIds = new[] { musicArtist.Id },
                     OrderBy = new[] { (ItemSortBy.AlbumArtist, SortOrder.Ascending), (ItemSortBy.Album, SortOrder.Ascending), (ItemSortBy.SortName, SortOrder.Ascending) },
                     DtoOptions = options
diff --git a/MediaBrowser.Model/Querying/LatestItemsQuery.cs b/MediaBrowser.Model/Querying/LatestItemsQuery.cs
index f555ffb36..d2d9f1f9a 100644
--- a/MediaBrowser.Model/Querying/LatestItemsQuery.cs
+++ b/MediaBrowser.Model/Querying/LatestItemsQuery.cs
@@ -2,6 +2,7 @@
 #pragma warning disable CS1591
 
 using System;
+using Jellyfin.Data.Enums;
 using MediaBrowser.Model.Entities;
 
 namespace MediaBrowser.Model.Querying
@@ -48,7 +49,7 @@ namespace MediaBrowser.Model.Querying
         /// Gets or sets the include item types.
         /// </summary>
         /// <value>The include item types.</value>
-        public string[] IncludeItemTypes { get; set; }
+        public BaseItemKind[] IncludeItemTypes { get; set; }
 
         /// <summary>
         /// Gets or sets a value indicating whether this instance is played.
diff --git a/MediaBrowser.Model/Search/SearchQuery.cs b/MediaBrowser.Model/Search/SearchQuery.cs
index aedfa4d36..1caed827f 100644
--- a/MediaBrowser.Model/Search/SearchQuery.cs
+++ b/MediaBrowser.Model/Search/SearchQuery.cs
@@ -2,6 +2,7 @@
 #pragma warning disable CS1591
 
 using System;
+using Jellyfin.Data.Enums;
 
 namespace MediaBrowser.Model.Search
 {
@@ -16,8 +17,8 @@ namespace MediaBrowser.Model.Search
             IncludeStudios = true;
 
             MediaTypes = Array.Empty<string>();
-            IncludeItemTypes = Array.Empty<string>();
-            ExcludeItemTypes = Array.Empty<string>();
+            IncludeItemTypes = Array.Empty<BaseItemKind>();
+            ExcludeItemTypes = Array.Empty<BaseItemKind>();
         }
 
         /// <summary>
@@ -56,9 +57,9 @@ namespace MediaBrowser.Model.Search
 
         public string[] MediaTypes { get; set; }
 
-        public string[] IncludeItemTypes { get; set; }
+        public BaseItemKind[] IncludeItemTypes { get; set; }
 
-        public string[] ExcludeItemTypes { get; set; }
+        public BaseItemKind[] ExcludeItemTypes { get; set; }
 
         public Guid? ParentId { get; set; }
 
diff --git a/MediaBrowser.Model/Session/BrowseRequest.cs b/MediaBrowser.Model/Session/BrowseRequest.cs
index 65afe5cf3..5ad7d783a 100644
--- a/MediaBrowser.Model/Session/BrowseRequest.cs
+++ b/MediaBrowser.Model/Session/BrowseRequest.cs
@@ -1,3 +1,5 @@
+using Jellyfin.Data.Enums;
+
 #nullable disable
 namespace MediaBrowser.Model.Session
 {
@@ -8,10 +10,9 @@ namespace MediaBrowser.Model.Session
     {
         /// <summary>
         /// Gets or sets the item type.
-        /// Artist, Genre, Studio, Person, or any kind of BaseItem.
         /// </summary>
         /// <value>The type of the item.</value>
-        public string ItemType { get; set; }
+        public BaseItemKind ItemType { get; set; }
 
         /// <summary>
         /// Gets or sets the item id.
diff --git a/MediaBrowser.Providers/Manager/ProviderManager.cs b/MediaBrowser.Providers/Manager/ProviderManager.cs
index ca557f6d6..6e5753361 100644
--- a/MediaBrowser.Providers/Manager/ProviderManager.cs
+++ b/MediaBrowser.Providers/Manager/ProviderManager.cs
@@ -11,6 +11,7 @@ using System.Net.Http;
 using System.Net.Mime;
 using System.Threading;
 using System.Threading.Tasks;
+using Jellyfin.Data.Enums;
 using Jellyfin.Data.Events;
 using MediaBrowser.Common.Net;
 using MediaBrowser.Common.Progress;
@@ -1133,7 +1134,7 @@ namespace MediaBrowser.Providers.Manager
             var albums = _libraryManager
                 .GetItemList(new InternalItemsQuery
                 {
-                    IncludeItemTypes = new[] { nameof(MusicAlbum) },
+                    IncludeItemTypes = new[] { BaseItemKind.MusicAlbum },
                     ArtistIds = new[] { item.Id },
                     DtoOptions = new DtoOptions(false)
                     {
diff --git a/MediaBrowser.Providers/MediaInfo/SubtitleScheduledTask.cs b/MediaBrowser.Providers/MediaInfo/SubtitleScheduledTask.cs
index 1eacbf1e1..cce71b067 100644
--- a/MediaBrowser.Providers/MediaInfo/SubtitleScheduledTask.cs
+++ b/MediaBrowser.Providers/MediaInfo/SubtitleScheduledTask.cs
@@ -7,6 +7,7 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
+using Jellyfin.Data.Enums;
 using MediaBrowser.Common.Configuration;
 using MediaBrowser.Controller.Configuration;
 using MediaBrowser.Controller.Dto;
@@ -66,7 +67,7 @@ namespace MediaBrowser.Providers.MediaInfo
         {
             var options = GetOptions();
 
-            var types = new[] { "Episode", "Movie" };
+            var types = new[] { BaseItemKind.Episode, BaseItemKind.Movie };
 
             var dict = new Dictionary<Guid, BaseItem>();
 
diff --git a/tests/Jellyfin.Api.Tests/Helpers/RequestHelpersTests.cs b/tests/Jellyfin.Api.Tests/Helpers/RequestHelpersTests.cs
index 4ba7e1d2f..c4640bd22 100644
--- a/tests/Jellyfin.Api.Tests/Helpers/RequestHelpersTests.cs
+++ b/tests/Jellyfin.Api.Tests/Helpers/RequestHelpersTests.cs
@@ -55,35 +55,5 @@ namespace Jellyfin.Api.Tests.Helpers
 
             return data;
         }
-
-        [Fact]
-        public static void GetItemTypeStrings_Empty_Empty()
-        {
-            Assert.Empty(RequestHelpers.GetItemTypeStrings(Array.Empty<BaseItemKind>()));
-        }
-
-        [Fact]
-        public static void GetItemTypeStrings_Valid_Success()
-        {
-            BaseItemKind[] input =
-            {
-                BaseItemKind.AggregateFolder,
-                BaseItemKind.Audio,
-                BaseItemKind.BasePluginFolder,
-                BaseItemKind.CollectionFolder
-            };
-
-            string[] expected =
-            {
-                "AggregateFolder",
-                "Audio",
-                "BasePluginFolder",
-                "CollectionFolder"
-            };
-
-            var res = RequestHelpers.GetItemTypeStrings(input);
-
-            Assert.Equal(expected, res);
-        }
     }
 }