Bracket 1
Black Sabbath(First Metal band I heard)
Ulver (Haven't heard enough Neurosis, Though im sure itd change if I heard them)
Isis
Dark Tranquillity (The hardest one by 29714027513 miles, choose Dark Tranquillity because, I'm unsure of the new Agalloch stuff)
Bracket 2
Burzum
Primordial(Tough)
The Lord Weird Slough Feg
My Dying Bride
Bracket 3
Carcass
Novembre (Tough as fuck, but Novembre are still releasing good albums)
Enslaved
Drudkh (TOUGH AS FUCK!~)
Bracket 4
Opeth
Judas Priest
Bathory
At the Gates