Here are some of my favorite death metal bands. There's a good variety here; melodic death, death/grind, progressive death, technical death, doom/death, death/black, jazz/death, industrial/death, and more.
!T.O.O.H.!
Aborted
Alarum
Anata
Arghoslent
Atheist
Atheretic
Atrophia Red Sun
Augury
Behemoth
Belphegor
Beneath the Massacre
Coprofago
Corphagy
Dark Tranquillity
Daylight Dies
Death
Decapitated
Dies Irae
Exhale
Farmakon
Fractal Point
Gardenian
Gojira
Gorguts
Gorod
Gory Blister
Harakiri
Hypocrisy
Immolation
In Vain
Intestine Baalism
Into Eternity
Kronos
Lykathea Aflame
Martyr
Morphia
My Silent Wake
Necrophagist
Neuraxis
Novembers Doom
Nyia
Pantokrator
Paramaecium
Pavor
Pestilence
Psycroptic
Royal Anguish
Quo Vadis
Scarve
Sleep Terror
Spawn of Possession
Stargazer
Suffocation
Sulaco
Symbyosis
Sympathy
The Amenta
The Chasm
Theory In Practice
Third Moon
Torchbearer
Vader
Vehemence
Wayd
Yyrkoon