Morpheus Descends' two post
Ritual albums seem to be influenced by Darkthrone's first quite a bit, particularly the last EP they did. They take the rolling, atmospheric style of death metal that Darkthrone created (via their peculiar Norwegian interpretation of the early Autopsy) and synthesize it with New York-style death metal, and they do it quite well, I might add. I never really hear too many people talk about later Morpheus Descends, but it is uniformly good stuff. Check it out
here, but I would really recommend just downloading the FLACs of their later stuff from Audiophile, as MP3 compression tends to ruin the sound of this kind of atmospheric death metal.
Anyway, I think that there is definitely a
lot of Autopsy on
Soulside,
Goatlord, and even
Blaze in the Northern Sky (check out the middle section of "Paragon Belial"), but Darkthrone definitely did something original with that Autopsy influence, something worth following up on. Not too many bands seemed to have tapped that similar vein of atmospheric black/death stuff in the same way, but there are a few that come to mind.
Septic Grave explored a similar kind of rolling, expansive ambiance, but they approached it from a more Unanimated/Dissection-type style (with quite a bit of ye olde Swedeath mixed in as well).
Obliteration, a newer band from Darkthrone's hometown of Kolbotn, take a lot of influence from the progressive song structures of
Soulside and
Goatlord, and find their own style by putting a heavy emphasis on separation of and complex interaction between different instrumental layers, particularly on their second album. They're an interesting band in that they're an amalgamation of a lot of disparate influences: you can hear bits of '70s progressive rock, weirder '80s punk/metal like Sacrilege and English Dogs, early doom/death like Dream Death, lots of Autopsy... it reminds me of how the olde Norwegian black metal acts were influenced by everything from Kraftwerk to Bathory to Tchaikovsky.
Cadaver's second album may have been influenced by Darkthrone's death metal period as well, but I can't confirm that.
A band falling into the "not-influenced-by-Soulside-but-working-from-a-similar-perspective" category would be
Toxodeth from Mexico. Be warned: their stuff is the kind of music that makes for great listening when you get your head around it, but it's also really weird and inaccessible. They started out as doomy '80s death thrash, but they radically altered the template by using a clear, expansive guitar sound and incorporating influences from Bach, Romantic classical stuff, and horror movie soundtracks. They focus less on brutality and more on atmosphere and intricate composition. I came across their first album a couple years ago, and I've been listening to it regularly ever since. It fits in really well with the atmosphere emanating from the bands described above.