Can some one give me a list of bands like Massacre, slayer or suffocation?

I just don't want any mainstream artists. For example NOOOOOO; as i lay dying, BMTH, The Devil Wears Prada, The Black Vadalia murder, the faceless, We Came as Romans, August Burns Red, This Or the Apocalypse, iwrestledabearonce etc. Ehhhh, You can throw in some like Slipknot, Pantera, Avenged Sevenfold or Mastodon but nothing like above. (---No, pop-metal bands.) I also like Sodom, Sargeist, Skeletonwitch, Nile, Meshuggah, Opeth, Acid Bath, Gojira, Extol, Windir, Dimmu Borgir, and Death Angel just to name a few.