NPC name: Damage Type it uses / (Damage to use against it)
Angel: Kinetic/Explosive(Explosive)
Amarr: EM/Thermal (Thermal)
Blood: EM/Thermal (EM)
Caldari: Kinetic/Thermal (Thermal / Kinetic for Temuras)
Concord: All Dmg Types (Thermal)
Gallente: Kinetic/Thermal (Thermal)
Guristas: Kinetic/Thermal (Kinetic)
Khanid: EM/Thermal (Thermal)
Minmatar: Thermal/Exp (Thermal / Exp for Darkanas)
Mercenary: EM/Thermal/Kinetic (Thermal)
Mordus: Kinetic/Thermal (Kinetic)
Odamian: Kinetic/Thermal
Drones: All Dmg types (EM)
Sansha: EM/Thermal (EM)
Serpentis: Kinetic/Thermal (Thermal)


Best Damage for NPCs
Guristas - Kinetic
Serpentis - Thermal
Mordus - Thermal & Kinetic
Blood - EM & Thermal
Sansha - EM
Angel - Explosive/Thermal
Mercenary - Thermal
Arch Angels - Kinetic/Thermal