I mainly just use ReVanced for YouTube and YouTube Music. It supports some other apps I use (like Twitch or Spotify), but there are better alternatives to those two. (If you'd like to see a full list of the apps supported by ReVanced and the patches available for those apps, go to https://revanced.app/patches .)

Someone created a version of the Twitch app that supports BTTV emotes, blocks ads, auto-claims channel points, and auto-updates whenever there's a new version available. They called it BTTV, though I don't believe they're actually associated with the BTTV browser extension.

As for Spotify, I use xManager. They patch the Spotify app to allow ad-free music, among other Spotify Premium features. (Not every Premiums feature is enabled. Some require communicating with Spotify's servers, and those aren't enabled.)