Damage types from NPC's:
Guristas - Kinetic / Thermal
Serpentis - Thermal / Kinetic
Blood Raider - Thermal / EM
Sansha's Nation - EM / Thermal
Angel Cartel - Kinetic / Expl / Thermal
Minmatar Fleet - Thermal / Explosive
Amarr Navy - EM / Thermal
NPC DaMaGe: Faction -

DMG type to use (DMG type to resist)
Electro Mag=EM / Explosive=EXP / Kinetic=KIN / Thermal=TML
Amarr - EM/TML
Angel - EXP/KIN (7,62,22,9)
Blood - EM/TML (50,0,2,48)
Caldari - KIN/TML
Corpum - EM/TML
EOM - KIN/TML
Gallente - TML/KIN
Gist - EXP
Guristas - KIN/TML (2,1,79,18)
Khanid - EM/TML
Mercenaries - TML/KIN
Minmatar - TML
Mordu's - KIN/TML (0,0,70,30)
Rogue Drones - All
Sansha's - EM/TML (53,0,0,47)
Serpentis - TML/KIN (0,0,45,55

Best Damage to NPCs
Guristas - Kinetic
Serpentis - Thermal
Mordus - Thermal or Kinetic
Blood - EM & Thermal
Sansha - Thermal/EM
Angel - Explosive
Mercenary - Thermal