Allakhazam posts with threads dating from 2014 =/= implemented on P99. Incorrect faction would be if he gave hits to the wrong factions.
Another example would be Dragoon Szorn in Lesser Faydark. Allakhazam says that he gives +100 The Dead and +100 Queen Christanos Thex but that's simply not the case here either. I'm not sure exactly what data is used for the exact faction hits from quests/mobs here but as there was no way of seeing these numbers in classic it's pretty much impossible to push the point.
I've maxed all of the factions you've listed by camping/killing the 2 lowbie Heretics in Toxxulia for a week straight (from apprehensive). You can do the same ! =p Let's just be grateful we have the Warrens to easily max Heretics instead of doing Inert Potion 4000 times!
Assuming you're not like me and doing faction for fun you only care about the Deepwater Knights and not the others. Check merchants near undead areas and start massing zombie skins to do
http://wiki.project1999.com/Zombie_Flesh_Quest.