diff --git a/PackageIndexer/PlatformPackageDefinition.cs b/PackageIndexer/PlatformPackageDefinition.cs
index 87ffad81..d31d8aac 100644
--- a/PackageIndexer/PlatformPackageDefinition.cs
+++ b/PackageIndexer/PlatformPackageDefinition.cs
@@ -104,16 +104,15 @@ internal static class PlatformPackageDefinition
         excludes:
         [
             PackageFilterExpression.Parse("System.Private.ServiceModel"),
+            // Windows Runtime.
             PackageFilterExpression.Parse("System.Runtime.WindowsRuntime"),
             PackageFilterExpression.Parse("System.Runtime.WindowsRuntime.UI.Xaml"),
             // Documented under Azure SDK for .NET moniker.
             PackageFilterExpression.Parse("System.ClientModel"),
             // Documented under ASP.NET Core moniker.
-            PackageFilterExpression.Parse("System.Threading.RateLimiting"),
-            PackageFilterExpression.Parse("Microsoft.Extensions.Caching.Hybrid"),
-            PackageFilterExpression.Parse("Microsoft.Extensions.Features"),
-            PackageFilterExpression.Parse("Microsoft.Extensions.Identity.Core"),
-            PackageFilterExpression.Parse("Microsoft.Extensions.Identity.Stores"),
+            PackageFilterExpression.Parse("Microsoft.Extensions.Features"), // NS is Microsoft.AspNetCore.Http.Features.
+            PackageFilterExpression.Parse("Microsoft.Extensions.Identity.Core"), // NS is Microsoft.AspNetCore.Identity.
+            PackageFilterExpression.Parse("Microsoft.Extensions.Identity.Stores"), // NS is Microsoft.AspNetCore.Identity.
             // Documented under ML.NET moniker.
             PackageFilterExpression.Parse("Microsoft.Extensions.ML"),
             // Documented under .NET Aspire moniker.