1. If you're subscribed to Youtube Red try Google Play Music (their other probably forgotten service). Their "radio" mode (pick an artist and pick "radio") are vastly superior to Spotify and other services I've used including much better than Youtube/Youtube Music itself.
2. Followers and Influencers
No idea if this is still around but back in 2003-2004 I used to subscribe to Rhapsody (the original music streaming service) and every artist had a list of who influenced them and who they influenced (followers). Those features were huge for me in finding new music.