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
Mordus - Thermal/Kinetic
Blood - EM/Thermal
Sansha - Thermal
Angel - Explosive
Mercenary - Thermal

Smallest to Largest Site
Burrow > Hideaway > Refuge > Rally Point > Den > Yard > Port > Hub > Haven > Sanctum