Damage type to protect against:
Angel - Exp Kin Therm EM
Blood - EM Therm
EOM - Kin Therm
Guristas - Kin Therm
Mercenary - Therm Kin Exp EM
Mordus - Kin Therm
Rogue Drones - Exp Kin Therm EM
Sansha - EM Therm
Serpentis - Therm Kin

Main Damage type to shoot;
Angel - Exp
Blood - EM
EOM - Kin
Guristas - Kin
Mercenary - Therm
Mordus - Therm Kin
Rogue Drones - EM
Sansha - EM
Serpentis - Kin

Exploration Stuff
Gravimetric = Belt
Radar = Hacking
Magnetometric = Arch/Salv
Ladar = COSMOS/Gas Clouds (Ladar sites can also be Arch)
Unknown = Complexes usually