Easier way to edit baked textures?

[Android14]

I am trying to fix some baked textures after swapping a character model with a another unused one. The player looks fine, but the npc faces are all messed up. I extracted BakedNpcTextures as I understand I need to replace their face files with my current swapped race. But there are over 15,000 blp files with no names of meaning. Am I suppose to convert each one as a png, see if its a tauren, and then change it? or is there a faster way?