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 was using LibreTube only as a music player and was a bit unreliable (sometimes it would crash or get stuck in infinite loading). Trying to use it for videos was impossible, since trying to skip even just 10s the video would load endlessly or just go black and freeze.
So I looked up on their github issue tracker and found this pinned.
Ah, thanks :)