Anomaly Class - Class 1 (easiest) to Class 10 (hardest)
Class 1 = (Faction) Hideaway or Drone Cluster (easiest)
Class 2 = (Faction) Burrow or Drone Collection
Class 3 = (Faction) Refuge or Drone Assembly
Class 4 = (Faction) Den or Drone Gathering
Class 5 = (Faction) Yard or Drone Surveillance
Class 6 = (Faction) Rally Point or Drone Menagerie
Class 7 = (Faction) Port or Drone Herd
Class 8 = (Faction) Hub or Drone Squad
Class 9 = (Faction) Haven or Drone Patrol
Class 10 = (Faction) Sanctum or Drone Horde (hardest)

Each Anomaly Class has 4 different level's
Level 1 = (Faction name) + Anom. Class (easiest)
Level 2 = (Faction name) Hidden + Anom. Class
Level 3 = (Faction name) Forsaken + Anom. Class
Level 4 = (Faction name) Forlorn + Anom. Class