Damage Type

Guristas - Kinetic / Thermal
Weak against - Kinetic

Serpentis - Thermal / Kinetic
Weak against - Kinetic

Blood Raider - Thermal / EM
Weak against - EM

Sansha's Nation - EM / Thermal
Weak against - EM

Angel Cartel - Kinetic / Explosive / Thermal
Weak against - Ex

Anomalies are ranked in difficulty by 10 levels, these are:
(Faction) Burrow / Drone Collection (lowest)
(Faction) Hideaway / Drone Cluster
(Faction) Refuge / Drone Gathering
(Faction) Den / Drone Gathering
(Faction) Yard / Drone Surveillance
(Faction) Rally Point / Drone Menagerie
(Faction) Port / Drone Herd
(Faction) Hub / Drone Squad
(Faction) Haven / Drone Portal
(Faction) Sanctum / Drone Horde (hardest)