Elder are superb, they’re very much on the progressive and heavy psychedelic side, they also incorporate a good amount of the Sleep-esque doom-drone elements. Lore is probably my favourite of theirs.
If you’re loving Elder you should really check-out the following bands that have stylistic similarities with Elder.
Weedpecker - Weedpecker (the albums II and III are equally superb)
Beehoover - Heavy Zoo
Acid King - Middle Of Nowhere, Center Of Everywhere
Earth - Angels of Darkness, Demons of Light
Russian Circles - Station (not at all a stoner band, post-rock, but I think you might like them)
My Sleeping Karma - Moksha
Om - Advaitic Songs
All Them Witches - Lightning at The Door
