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.
I can’t seem to find it anymore :/
It’s in the IzzyOnDroid repo: https://apt.izzysoft.de/fdroid/index/apk/io.freetubeapp.freetube
And you can also get it from GitHub through Obtainium
Thank you