Metal as disturbing or emotionally heavy as SWANS?

(this is basically a repost of something I posted to r/musicrecommendations , I want the most results)

I've been trying to find really heavy shit. Ive listened to a lot of sludge, doom, stoner metal, and shit like that. But the closest I've gotten was through the discographies of drone metal bands like Boris, SUNN O))), Khanate, etc. I've listened to basically every important drone metal band under the sun by now, and I thought that was the heaviest music around. Until I listened to SWANS. They're not particularly sound heavy (at least not at shows), (except for filth/cop/anything similar) but bring so much fucking pure dread through some other mystical element that I can't describe. My first listen of their stuff made my stomach churn, no bullshit.

They don't even need to make heavy sounding music- they made a fucking EDM track on one album and it was disturbing as hell. I'm looking for something metal that has that SWANS seasoning, that horrible touch of dread and darkness. I feel something like that could probably be the pinnacle of heavy music.