I'm not really a fan of screaming so that kinda limits my Metal listening experience to a tiny bit of the bands, though there are a few songs I can enjoy with screaming). I'm quite picky though in my general taste, but here is a list of mine of all metal(there or there abouts) I listen to:
Amon Amarth(a few)
Avenged Sevenfold
Between the Buried and Me(2 songs, 1 which isnt metal)
Black Sabbath
Black Tide
Breaking Benjamin(not really sure what they class as, tbh)
Bullet for my Valentine(a few songs)
Circus Maximus
The Confession
Cradle of Filth(a couple of songs)
Devin Townsend Project
Diablo Swing Orchestra
Disturbed
Dog Fashion Disco(kinda, but not really. Fits into Avante-Garde metal)
Dream Theater
Extreme(do they count?
)
Five Finger Death Punch(1 song)
Helloween
Iron Maiden
Megadeth
Mutiny Within
Nightwish(a few songs)
Ozzy Osbourne
Pantera(a few)
Protest the Hero(a few songs)
Uhm.. Rammstein...
Rhapsody
Sabaton(a few songs)
Serj Tankian
Sirenia
Stone Sour
System of a Down
Tool
Tyr
Within Temptation
I need to expand to be honest, and youtube helps with that a fair bit...