The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- "Snow Fire" (1 member)
- 100 Tons (18 members)
- 20 Tons (13 members)
- 25 Tons (13 members)
- 30 Tons (30 members)
- 35 Tons (41 members)
- 40 Tons (14 members)
- 45 Tons (32 members)
- 50 Tons (48 members)
- 55 Tons (23 members)
- 60 Tons (17 members)
- 65 Tons (23 members)
- 70 Tons (18 members)
- 75 Tons (22 members)
- 80 Tons (24 members)
- 85 Tons (15 members)
- 90 Tons (19 members)
- 95 Tons (11 members)
- Adder (7 members)
- Affiliated with Unit:4th Cavalry Division (1 member)
- Affiliated with Unit:Jade Falcon Clan (1 member)
- Aleksandr Kerensky (4 members)
- Alisander Dunbar (1 member)
- Andrew Cunningham (1 member)
- Anton Marik (2 members)
- Archer (2 members)
- Arctic Cheetah (8 members)
- Arctic Wolf (1 member)
- Armor (3 members)
- Arnaud Rai (1 member)
- Assassin (1 member)
- Assault BattleMechs (85 members)
- Atlas (21 members)
- Awards (2 members)
- Awesome (12 members)
- Ballistic Weapons (25 members)
- Banshee (8 members)
- BattleMaster (12 members)
- BattleMech (71 members)
- BattleMechs (1 member)
- BattleTech (1 member)
- Battlemap (29 members)
- Black Knight (5 members)
- Black Lanner (2 members)
- Blackjack (12 members)
- Block (2 members)
- Can Mount ECM (28 members)
- Candace Liao (3 members)
- Candidates for deletion (5 members)
- Candidates for speedy deletion (0 members)