After the death of ViMusic (a very lightweight MD3 YouTube Music client) I saw RiMusic getting quite popular but now it’s a very feature-rich client with its own UI design that is also very slow on older devices (based on my bare metal tests). I found this other one interesting so hopefully someone else will like it too.
Not all FOSS apps look good now but MD3 really made it easy to make good looking apps. Still it’s a shame the libraries that are used to provide it are slower than the previous ones.