LibreTube - uses Piped as video source by default. Subscriptions and playlists can be created, all without actually interacting with YouTube.
Clipious - uses Invidious as the video source. Also allows for subscribing and accounts. Lesser known client
NewPipe - Gets the source directly from YT. Allows for subscribing and creating playlists
Additionally, there’s also ReVanced that lets you patch the regular YT app to include useful features.
Tubular: A fork of NewPipe (Github) that implements SponsorBlock (Github) and ReturnYouTubeDislike (Github). https://github.com/polymorphicshade/Tubular?tab=readme-ov-file#a-fork-of-newpipe-github-that-implements-sponsorblock-github-and-returnyoutubedislike-github