For what it's worth, here are the other 'how did I miss them?' bands that might've earned bonus points:
Tool
Opeth
Riverside
Coheed & Cambria
Leprous
Karnivool
Anthrax
Slayer
Pantera
Motorhead
Testament
Metal Church
Mercyful Fate
Kade landed on three of them (Megadeth, King Diamond, and Amorphis), while rj had two (Orphaned Land and BTBAM)