NPC - Damage Used - Weakness
Angel Cartel - Exp/Kin - Exp
Blood Raiders - EM/Ther - EM/Ther
Drones Lvl 1&2 (varies)- EM/Ther - EM/Ther
Drones Lvl 3&4 (varies)- Exp/Kin - Exp/Kin
EoM - Kin/Ther - Kin
Guristas - Kin/Ther - Kin
Khanid - EM/Ther - Ther/EM
Mercenary - Kin/Ther - Kin/Ther
Mordu's Legion - Kin/EM - Kin
Sansha's Nation - EM/Ther - EM/Ther
Sansha (Incursion) - All - All
Serpentis - Kin/Ther - Kin/Ther
Sleepers - All - All
Amarr - EM/Ther - EM/Ther
Caldari - Kin/Ther - Kin/Ther
Gallente - Kin/Ther - Kin
Minmatar - Exp/Kin - Exp

Drone Damage Types
Kin - Scourge - Hornet/Vespa/Wasp/Warden
EM - Mjolnir - Acolyte/Infiltrator/Praetor/Curator
Ther - Inferno - Hobgoblin/Hammerhead/Ogre/Garde
Exp - Nova - Warrior/Valkyrie/Berserker/Bouncer

Stacked module effectiveness
1st = 100.0%
2nd = 86.9119842%
3rd = 57.1037996