In KOTOR2 (using the restored content mod, if it matters) there are some items and lightsaber crystals that add bonus lightside damage or darkside damage. There are also a few pieces of equipment that reduce damage from one or both of those types of damage. Other than these rare pieces of equipment that mitigate this damage, what is significant about these damage types?
Do light side damage bonuses deal extra damage to Sith and darkside to Jedi? Also, is Force Lightning an electric attack or a dark side attack? What about Stun Droid?
(This seems to have information on the personal crystal which has different damage types depending on your alignment as well as different amounts of that alignment-elemental damage depending on your foe's alignment: https://www.gamefaqs.com/xbox/920194-star-wars-knights-of-the-old-republic-ii-the-sith-lords/faqs/34505)