Pallbearer and Ahab are both pretty good for funeral doom or death/doom (depending on who you ask).

I like a little bit of “epic” doom themes but trad doom, power metal, and actual epic doom are a little too cheesy for me, so I lean toward Conan (very heavy, approaching a sludge-drone hybrid) and Khemmis (who describe their sound as “doomed heavy metal”)

I actually usually skew more psychedelic doom or stoner/prog doom, which has a lot of great stuff in the past few decades. Sleep’s Holy Mountain (classic stoner metal), Grief’s Infernal Flower by Windhand (psych doom), Clearing the Path to Ascend by YOB (heavy stoner/prog), Lore by Elder (very proggy but still catchy).

Also, I assume you’ve seen the most common recommendations for classic sludge, The Melvins (especially Houdini and Bullhead), Eyehategod, and Side B of My War by Black Flag. If not, get started there

edit: Obviously I’ve got lots of other fun options in each of these veins, so hmu if you want more