Damage done by npc :

Angel = 62% Explosive 22% Kinetic
Guristas = 79% Kinetic, 21% Thermal
Blood = 50% Em 48% Thermal
Mordu's = 70% Kinetic 30% Thermal
Sansha = 53% Em 47% Thermal
Serpentis = 55% Thermal 45% Kinetic
-------------------------------
Amarr = 47% Em 42% Thermal
Caldari = 51% Kinetic 48% Thermal
Minmatar = 50% Explosive 31% Kinetic
Gallente = 60% Kinetic 39% Thermal

damage good against npc :

Angel Kinetic/Explosive (Explosive)
Amarr Navy EM/Thermal (Thermal)
Blood Raiders EM/Thermal (EM)
Caldari Kinetic/Thermal (Thermal / Kinetic for Temuras)
Concord EM/All Dmg Types (Thermal)
Gallente Kinetic/Thermal (Thermal)
Guristas Kinetic/Thermal (Kinetic)
Khanid EM/Thermal (Thermal)
Minmatar Fleet Thermal/Exp (Thermal / Exp for Darkanas)
Mercenary EM/Thermal/Kinetic (Thermal)
Mordus Kinetic/Thermal (Kinetic)
Odamian Kinetic/Thermal
Serpentis Kinetic/Thermal
-------------------------------
Drones all Dmg types (EM)
Rogue Pirate EM/Exp