Hello, im posting this because i have been farming the two world bosses in outland doomlord kazzak in hellfire peninsula (throne of kealjaden) and doomwalker in shadowmoon valley (Black temple entrance NOT to be mistaken with the inside of Bt)
For me i always find these guys spawned its just nice to check every couple of days on their two spawn points because at lvl 85 they are VERY soloable + its exciting to solo a boss down and loot over 400g
Most players i talk to do not even remember these bosses so i just wanted to throw it out that they still spawn its about a 2 day respawn and if you just happen to be flying around outlands or are bored you can go look for them it doesn't take that long and its worth it in my opinion
NOTE- doomlord kazzak was a WTF GO DIE IN A FIRE thing in BC so he may still be farmed a lot on your realm, but doomwalker has always been there for me.
EDIT:
Just reminding those who have forgotten and telling those who don't know <3