The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Ego psychology (0 members)
- Eldritch Doll Non-Player Characters (4 members)
- Elemental Characters (2 members)
- Elemental Non-Player Characters (1 member)
- Embers of Soteria (45 members)
- Embers of Soteria Characters (54 members)
- Embers of Soteria Non-Player Characters (10 members)
- Epsilon Tatva Sector (7 members)
- Ethical schools and movements (1 member)
- Euthenics (1 member)
- Exclude in print (1 member)
- Familiars (1 member)
- Fauna (1 member)
- File message boxes (4 members)
- File namespace templates (2 members)
- Files with no machine-readable source (1 member)
- Footnote templates (1 member)
- French writer navigational boxes (1 member)
- HSD Sectors (0 members)
- HSD Space Sectors (1 member)
- HSD Star Systems (1 member)
- Hatnote modules (1 member)
- Hermod Gate Terminals (20 members)
- Hermod Super Gates (0 members)
- Hermod Supergates (3 members)
- Historic Technology (0 members)
- Human Characters (132 members)
- Human Hybrid (0 members)
- Human Hybrid Characters (4 members)
- Human Hybrid Non-Player Characters (3 members)
- Human Non-Player Characters (32 members)
- Human behavior (1 member)
- Human rights templates (1 member)
- Identity (social science) (0 members)
- Identity politics (1 member)
- Incident Reports (0 members)
- Independent Vessels and Facilities (19 members)
- Individualism (1 member)
- Infobox modules (1 member)
- Intricate templates (1 member)
- Japan society and social science navigational boxes (1 member)
- Las Miranonine Sector (7 members)
- List by Organization (3 members)
- List by Player (22 members)
- List by Race (9 members)
- List by Setting (4 members)
- Lodging (5 members)
- Lua-based templates (9 members)
- Lycanthrope Characters (5 members)
- Majority–minority relations (1 member)