Would you consider any of the following bands as metal/heavy metal?!

Would you consider any of the following bands as metal/heavy metal?

AC/DC
Alice in Chains
Deftones
Guns N' Roses
Faith No More
Mudvayne
Rage Against the Machine
Slipknot
Soundgarden
System of a Down
Tool
Trivium


I've seen a lot of disputes regarding these bands as metal or not...or do these bands simply are influenced by metal?

1 week ago
Lawl...AIC and RATM came long before the nu-metal craze.

1 week ago
Should have also mentioned Disturbed, many believe they're heavy metal now due to their third album containing more metal elements.

The old classification game, always fun. You could consider all the bands listed as metal. Some are heavier than others but all could be played on a metal station without much debate. Also I am curious how anyone could call AIC nu-metal when the term wasn't even invented until Linkin Park & Limp Bizkit.