Steam has updated the wishlist page with categories, filters, and tags for demos

Valve has indeed released another update for its digital game store. As expected, it addresses user interactions with their wishlists.

Key Updates

Steam users can now create custom categories in their wishlists and sort games within them. Additionally, there are category filters and an option to add categories to the frequently used list.
If preferred, gamers can disable notifications from certain wishlist categories they've created, leaving alerts from only the most essential ones.
Valve has improved search on the wishlist page. Specifically, the search bar now supports autocomplete.
Games with demos are now marked separately in the wishlist. There's also an option to receive notifications about new demo releases for games that don't have them yet.
There's a new feature to share a link not only to the entire wishlist but also to individual categories within it or to a list filtered by specific criteria. These links will allow viewing of the list even if it's initially hidden by privacy settings, and people without a Steam account can also access it.