It took me a while too. I used to mock people who listened to it.
I just thought it was a joke, but it's all I want to hear now. So many incredible bands doing it.
It looks like you've got all the scandinavian shit covered
France:
Deathspell Omega: I am obsessed with these guys. just the most incredibly claustrophobic and punishing music I've ever heard in my life.
Si monvmentvm reqvires, circvmspice
Kénôse
Fas Ite, Maledicti, in Ignem Aeternum
Mass Grave Aesthetics
Paracletus
Drought
listen to them in that order.
http://youtu.be/z5M78jWUuJ4
Blut aus Nord: the programmed drums give an industrial sound to it. They've got a vast discography, so I'll list what I think are the best
The Work Which Transforms God
Memoria Vetusta II Dialogue with the Stars
777 - Sect(s)
777 - The Desanctification
777 - Cosmosophy
What Once Was... Liber I
What Once Was... Liber II
http://youtu.be/qKsYnHPX6Ns
Ukraine:
Drudkh: Forgotten legends is fucking incredible.
Forgotten Legends (2003)
Autumn Aurora (2004)
Blood in Our Wells (2006)
Handful of Stars (2010)
http://youtu.be/BdEnT_kwS1g
Netherlands:
Dodecahedron: These guys debuted with this album and it is brilliant.
the last three tracks are some god tier shit.
Dodecahedron.
http://youtu.be/dXstyZIxnTA
US:
Weakling: These guys paved the way for all future USBM bands. Sadly they only released the one album, but it is incredible
Dead as Dreams
http://youtu.be/loH5evmVDHw
Wolves in the Throne Room: Aside from Krallice, these guys are what got me started on BM. It's beautiful music. Kvlt fags love to hate on wittr, but they hate on anything that isn't Darkthrone worshipping, generally.
Diadem of 12 Stars
Two Hunters
Black Cascade
Celestial Lineage
http://youtu.be/yTnfzWehaGg
Krallice: Mick Barr and Colin Marston are two of the most gifted guitarists in the world in their own right. Having them together in one band makes for awesome music.
Krallice
Dimensional Bleedthrough
Diotima
Years Past Matter
http://youtu.be/sDP1W2dllj0
Ash Borer:
Ash Borer
Cold of Ages
http://youtu.be/NlQET8Ymm6k
Leviathan: This guy is just too fucking good
The Tenth Sub Level of Suicide
Massive Conspiracy Against All Life
True Traitor, True Whore
http://youtu.be/s3-tTeKBuog
The self titled album he released under the Lurker of Chalice moniker is one of the finest examples of atmospheric BM. A perfect album in my opinion.
http://youtu.be/rXLrtwlcdu0