I'm adding Goety on an existing save data. I had 3 Librarians and 1 unemployed Villager. After adding Goety (2.5.24.0) the 3 Librarians converted to Heretics and the unemployed Villager kept unchanged.

Set this to false:
https://github.com/Polarice3/Goety-2/blob/1.20/src/main/java/com/Polarice3/Goety/config/MobsConfig.java#L523