How are you seeding the new Roon Radio?

Assuming you are using the new Roon Radio and have it opened up to tracks outside of your library, what type of seed do you feel is giving you the best results? Track, album, or artist? I’m looking for lack of repetition as well as a lack of mismatches or outliers that don’t fit well with the seed. So far, I’ve used mostly individual tracks and been pretty happy with the results, though I am seeing some albums repeatedly across a number of different seeds (the same 70s era Roxy Music, Iggy Pop, and New York Dolls albums with a David Bowie seed and a Jeff Beck seed, for example). If it helps, my library is about 56k tracks, 2/3 Tidal/Qobuz, 1/3 local files. Cheers!