Regular townies turning into spellcasters?

I opened the filter, Vampires, Alien and Mermaids are blacklisted, they can't be choosen as NPCs Spellcasters... Anyway, I edited the filter and made a mod to stop non occult sims from being turned into occults at random, too... you can find it here

https://forgottenhollow-secretgarden.tumblr.com/post/187627434911/quick-mod-for-rom-dont-turn-my-sims-into