Damage dealt by NPC's -

Gurista/EoM: 0.75 kin/0.25 therm
Angel: 0.7 exp/0.2 kin/0.1 em
Sansha/Blood raider/Amarr empire: 0.5 em/0.5 therm
Serpentis/Caldari state: 0.5 kin/0.5 therm
Gallente federation: 0.5 kin/0.4 therm/0.1 em
Minmatar republic: 0.5 exp/0.2 em/0.2 kin/0.1 therm
Mercenaries: 0.5 therm/0.3 kin/0.1 exp/0.1 em
Rogue drones: 0.7 exp/0.2 kin/0.1 therm

What to shoot at NPC's -

Gurista - Kinetic
Angel - Explosive
Sansha - EM
Blood Raiders - EM
Serpentis - Thermal
Mercenaries - Kinetic/Thermal
Amarr Empire - EM
Caldari State - Kinetic
Gallente Federation - Kinetic/Thermal
Minmatar Republic - Explosive
Rogue Drones - Roll a dice

Nomenclature -

Guristas - Pithi
Angel Cartel - Gisti
Blood Raiders - Corpi
Sansha's Nation - Centi
Serpentis - Coreli
Rogue Drones - Alvi