Here's what you should be shooting at them!
Guristas - Kinetic
Serpentis - Thermal; Kinetic
Mordus - Thermal; Kinetic
Galente Navy - Explosive
Blood - EM; Thermal
Sansha - Thermal; EM
Angel - Explosive
Mercenary - Thermal
Corpum - EM & Thermal
Gist - Explosive

Ladar to find Gas Clouds
Radar to find Hacking Sites, CodeBreaker
Magnetometric to find Archeological sites, Analyzer/Salvager
Gravimetric to find Hidden asteroid fields

** Damage types ***
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