there's a lot out there, not as popular as these but there's many righteous faction mc if you actually look for it
Try browsing here:
https://www.mangago.me/tag/murim/?page=1
I especially recommend:
Path of the Shaman
Lightning Degree
Surviving as a genius on borrowed time
one hit teacher master beck
absolute dominion
reincarnation of the heavenly demon (he's not on the demonic side or bad side, he's the former leader of murim alliance, idk what's up with the title, it's fake)
doctors rebirth
chronicles of the lazy sovereign
and so on, that's all I remember but there's a lot more in the link I gave you, just read the title and you'll know which ones you're looking for
This looks interesting
But I wonder, I know there are many where mc is part of the demonic faction, is there any good story in the righteous faction?