If you're looking to stay off Apple Music, Idagio is good. (I'm not affiliated with them, other than being a happy customer.)
(At one point they were testing a feature where you could compare recordings of the same piece. It would effectively allow you to switch between pieces at the exact same moment in the particular passage you were listening to. It was great, and I’m sad they never rolled it out. That feature alone would have made the app worth the monthly subscription.)
Wish I'd never given Primephonic a cent. The knee jerk is to blame Apple, but the real villains are the owners of Primephonic.
The main label I personally miss is Hyperion but I'm not sure they're streaming anywhere.