I have a niche for stoner doom metal bands that sound like the songs
Black Sabbath - "Into The Void"
Pentagram - "Evil Seed"
Witchfinder General - "Witchfinder General"

If you are a doom / stoner doom expert, here's more:
-The bass is at least extra pronounced and overdriven
-Nice deep and foggy sound atmosphere to tap into your stoned auditory enjoyment
-Doesn't sound like Sleep (too sharp and treble-y), similar to Electric Wizard
-Vocalist has that Ozzy-esque tone, like Bobby Liebling or Zeeb Parkes
-NOT too much obnoxious weed-culture in songs (ex. "Sweet Leaf" is ok, "Mummified in Bong Water" is retarded.)

I don't know how into Epic Doom Metal you are but some of their earlier songs sound like slightly more symphonic versions of Pentagram and Black Sabbath songs. Try "Dark are the veils of Death" and "Demon's Gate". The vocals will probably be a deal breaker for you there though but still give it a try. I think you'll really like Crowbar's 1993 self titled Album. Their cover of Led Zeppelin's "No Quarter" as well as "I have failed" are extra sludgy. Also neither of these bands hardly mention weed culture. Also, if you haven't already, try listening to Melvins' "Houdini" that's pretty great too. Might be a bit "treble-y" but they blend punk and sludge/doom really well without the obnoxious 200bpm power chord riffs.

Sahg would probably be a pretty good bet.