I might not able to fresh post as of 2019, but here's a good news. It's an old document top 10 back in 2005 when i was youth, those are really good composers.
1.Kurt Harland (Legacy of Kain: Soul Reaver)
2.Sonic Mayhem (Quake II)
3.Terry Scott Taylor (The Neverhood)
4.Tommy Tallarico (Earthworm Jim)
5.Bobby Prince (Duke Nukem 3D & DOOM)
6.David Bowie (Omikron)
7.Koji Kondo (Ocarina of Time)
8.Yuzo Koshiro (Street of Rage)
9.Nobuyoshi Sano (Tekken 3)
10.Kenji Yamamoto (Metroid Prime)
Everyone else is good, but David Bowie doesn't really count as a video game composer. If you want you can just swap him with someone else or add someone at the end, or I can just count the rest of the composers and ignore him.