I wanted to share this open-source alternative to Spotify/YouTube Music for Android that I found. It's ad-free and VERY CUSTOMIZABLE. This definitely deserves so much MORE recognition. https://github.com/koiverse/ArchiveTune
In the README under Acknowledgements, they credit Metrolist for base framework.
In other news, I'm satisfied with metrolist so I don't see a need to switch, has been a much better experience than spotube even before their refactor cuz of Spotify lawyers.