Anomalies:

From easiest to hardest:

* (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)

Variations, from easiest to hardest:
Hidden < Forsaken < Forlorn