What are some of the doomier sludge bands?

Hi all. I’ve recently dipped my toes into the sludge genre and have listened to the essentials. While bands like Acid Bath and EHG kick ass, I fell more in love with the atmospheric depravity of bands like Neurosis, Rwake, and Mastodon’s first album.

I will gladly accept any recommendations for more depressing and cutthroat songs/albums like these. Thank you.