Damage Types:

Angel's = Explosive/Kinetic
Minmatar = Explosive/Kinetic
Thukker Tribe = Explosive/Kinetic
Blood Raider = Thermal/EM
Ammatar = EM/Thermal
Ammar navy = EM/Thermal
Sansha's = EM/Thermal
Mordu's legion = EM/Thermal/Kinetic
Mercenary Commander = EM/Thermal
Khanid Kingdom = EM/Thermal
Mercenaries = Kinetic/Thermal
Guristas = Kinetic/Thermal
Serpentis = Thermal/Kinetic
Rogue Drones = Thermal/Kinetic/EM

Best Damage to NPCs:

Guristas - Kinetic
Serpentis - Thermal - Plasma
Mordus - Thermal & Kinetic - Plasma
Blood - EM & Thermal - EMP
Sansha - Thermal - Plasma
Angel - Explosive - Fusion
Mercenary - Thermal - Plasma

Shield Tanking:
mordus, guristas, EOM with 2 kin 1 therm.
serpentis with 1 kin and 2 therm
sansha, blood raiders 2 EM and 1 therm.
mercendaries 1 kin 1 thermic 1 invulnerability
Rogue Drones, angel 1 Explosive , 1 kin, 1 Inv