Here goes. I put in some bands that I like and took out some bands that are blatantly awful (Cannibal Corpse!)
Aborym
Aborted
Abramelin
Abyssic Hate
Aeveron
Agalloch
Alcest
Arcturus
Asunder
Atheist
At the gates
The Axis Of Perdition
Bathory
Battle Of Mice
Between the buried and me
Be'lakor
Behexen
Black Majest
Black sabbath
Bloodbath
Bloodthorn (early)
Blut aus nord
Burst (from the albums i have heard)
Burzum
Capharnaum
chrisdoig24k lulz
Clad In Darkness
Code
Control Denied
Cynic
Cult Of Luna
Dawn
Daylight Dies
Death
Deathspell omega
Deicide
Decapitated (RIP Vitek)
Disillusion
Diabolical masquerade
Dodheimsgard
Down
Drudkh
Earth
Ebonylake
Esoteric
Entombed
Enslaved
Edge of sanity
Ephel Duath
Emperor
Endstille
Envy
Estatic Fear
Explosions in the sky (not really metal but oh well)
Falls of Rauros
Fen
Forefather
Forgotten Tomb
Funeral
Genghis Tron
Gallhammer
Gojira
Gorguts
Hypocrisy
I
Iciclan
Ihsahn
Ikuinen Kaamos
Immortal
In Flames (early)
In The Woods...
Isis
Katatonia
Keen of the Crow
Khoma
Krohm
Kronos
Limbonic Art
Lykathea Aflame
Mastodon
Maudlin of the well
The Meads Of Asphodel
Meshuggah
Mirrorthrone
Mithotyn
Moonsorrow
My dying bride
Myrkgrav
Nae'blis
Neurosis
Negura bunget
Ne Obliviscaris
Nevermore
Nile
Niroth
Oakhelm
Opeth
Opthalamia
Pestilence
Primordial
Psycroptic
Rainshadow
Reverend Bizarre
Rosetta
Riverside
Shining (Sweden)
Swallow the sun
Sunn 0)))
Satyricon
Sigh
Sikth
Silencer
sleepmakeswaves
Solstafir
Strapping young lad
Summoning
Taake
Textures
Temnozor
Thorns
Tool
Ulver
Vader
Vanessa Van Basten
Vehementer Nos
Ved Buens Ende
Virgin Black
Vital Remains
Weakling
When Day Descends
Winds
Will of the Ancients
Wolves In The Throne Room
Woods of Ypres (first album is the best)
Zyklon
The Zombi