How do i find a list of artists i like not just the list of artists on my phone

Maybe this is an old fashioned viewpoint on music but I want access to a list of Artists I like NOT just a list of artists I have downloaded or have linked to my library. I cant find a way of seeing everyone I like or adding a band or artist without adding them to a library or downloading a track.

Before the days of Apple Music I spent months/years copying all my CD's to my iTunes collection, making sure all the artwork was correct etc only for an update to completely mess my library up!

Sometimes I want to go back to an artist/track that I listened to years ago but cant remember the name, it just seems bizarre there's no function just to like a band without having download a track or add it to a library.