Albums like Opeth's Orchid

If you weren't into such specifics, then I would be recommending atmospheric music like In the Woods - Omnio and Ulver, but you are so I won't. Welcome to the forum anyway.

I agree that orchid is the best opeth album

Sadly there’s nothing else like it so enjoy it as a musical island

I never claimed to dislike melodic black, but if I'm looking for something that sounds like Orcihd I'm very much NOT looking for melobkack. I mean, you can call it whatever you want, but you can't tell me it sounds like Dissection, Vinterland or Sacramentum.

Oh wait forget what I just said. You like Swedeath/Gothenburg Metal loo

El Norra Alila by Orphaned Land is still strong recommendation because the left and right pan are actually different takes of the same guitar part, so it sounds slightly different in both ears, bot so much Sahara in this regard, but what Sahara does is that is has the more traditional Gothenburg ("power metal") sound.

What I'm specifically looking for: the riffing style, that sort of power metally/trad heavy twin guitar melody work (think, say, the intro of "In Mist...") where both guitars are playing slightly different melodies or harmonies at the same time (as opposed to have one playing melodies and the other doing chords), yet with a certain rock n roll sloppiness to it. Important that there's little to no tremolo picking and the riffs are never chunky or groovy. Also that it has a dry, thin guitar tone. Also, and this is primordial, NO blast beats!

What I'm not looking for: stuff that's also melodic but is heavy on tremolo and blasts (literally any melodic black metal), stuff that is just atmospheric but has nothing on the riffing style (Agalloch or Deafheaven). Also, Morningrise. Just no.

I already know Katatonia, Dark Tranquility, Edge of Sanity, aMORPHIS, Obsequiae, Dreichmere and Eucharist. I need stuff that's closer!

Sorry for being picky, but I wanted to really be specific on what I want. Thank you for your time.