As far as I know, there’s no differences between races other than appearance and background.
Would like to suggest some variations -
NPCs of the same race to recognize you (potential friendlies)
cold and heat tolerances/penalties - Nordheimers for example are more used to colder weather, so would naturally be more likely to have tolerances toward cold, but may not tolerate heat as well.
Knowledge - recipes known from creation - cooking, clothing, etc. Still have to gather materials and possibly work stations for them, but you’d know how to make certain things from life prior to being exiled.
Emote(s) - common greetings, insults, etc, for the race from which the character originated.