I'm only familiar with Doujin circles that primarily do Touhou music, and even then, the more notable ones that I remember off the top of my head are IOSYS (mainly because of their animated MVs) and COOL&CREATE (because Night of Nights and the U.N.Owen remix). I only know a few Yuuhei Satellite tracks, and that's only because of the Memories of Phantasm videos, that prominently uses their songs.