^Finntroll does count, and SYL is not industrial metal.^
Ok, so I'll give this a shot.
Death metal: Er, don't care much for dm, but Bloodbath, I guess.
Black metal: Hehe, a tie between Emperor, Immortal, Diabolical Masquerade and Weakling.
Melodeath metal: Soilwork.
Viking metal: Bathory and (though they're not really 'Viking') Moonsorrow.
Folk metal: Probably Finntroll. Asmegin and old Vintersorg are close.
Progressive metal: Symphony X and newer Vintersorg.
Heavy metal: Iron Maiden.
Doom metal: Not really doom, but Katatonia.
'Ethnodeath' metal: Orphaned Land.
Progressive death metal: Opeth.
Technical metal: Spiral Architect.
Plain extreme metal: Strapping Young Lad.
Bard metal: Blind Guardian.