Main Damage type to shoot at the enemy
Guristas - Kinetic
Serpentis - Thermal
Blood - EM
Sansha - EM
Angel - Explosive
Mercenary - Thermal
Gist - Explosive
EoM - Kinetic
Drone - EM

Targeting systems
Minmatar - Ladar
Caldary - Gravimetric
Gallente - Magnetometric
Amarr - Radar

Damage types; what to tank
Guristas - Kinetic / Thermal
Serpentis - Thermal / Kinetic
Blood Raider - Thermal / EM
Sansha's Nation - EM / Thermal
Angel Cartel - ALL
Minmatar Fleet - Thermal / Explosive
Mordus - Kinetic / Thermal
Corpim - EM / Thermal
Gist - ALL

UNKNOWN: Combat sites. Can be found with ANY PROBE TYPE.
GRAVIMETRIC: Hidden asteroid belts
MAGNETOMETRIC: Archaeology/Salvage profession sites
RADAR: Hacking profession sites
LADAR: Gas Cloud sites