Dark Tranquillity
Children of Bodom
In Flames
Coal Charaber
Sevendust (ish, are they metal or haaaard rock? They're heavier metal than Maiden, but genres seem to play silly buggers with some people)
Converge are Hardcore punk with an experimental edge. There is next to no metal there.
Norma Jean and The Chariot are hmm...It's hard to place them...they're sorta like Noisy Hardcore but with more...variance in their sound. But they have no metal influence in their music.