grey knight
Etheraven
Wintersun.
Actually it's just metal with tons of different influences.
(note: I'm wearing Wintersun hood-thing atm.)
Edit: well I have noticed that CoB and Norther are pretty light (atleast the old stuff)
But it's still mostly non-powermetal, even if it didn't have those vocals.
Hmm...I think (atleast old CoB) should be called Dark metal...
Edit2: According to Metal archives...
CoB;
http://www.metal-archives.com/band.php?id=22
Norther;
http://www.metal-archives.com/band.php?id=1815
Wintersun;
http://www.metal-archives.com/band.php?id=22813
Kalmah;
http://www.metal-archives.com/band.php?id=702