Planning to do a "Light" vs "Dark" playthrough, where my magic colonist mostly use "light" based damage, and enemy mage pawn mostly use "Dark" type damage. Other non-magic pawns would still use the usual weapon (I am using medieval overhaul)

I notice "light" type damage does more damage to undead; so the question is what spells use "light" damage and what creatures are "undead"?

Also is there a way to add/mod other animals/monsters to be "undead", or "Dark" and susceptible to "light" based damage?