The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- 2005 (7 members)
- 2005 releases (5 members)
- 2009 (1 member)
- 2010 establishments (1 member)
- 2015 (3 members)
- 2016 (1 member)
- 2017 (2 members)
- 2017 releases (1 member)
- 2018 (2 members)
- 2019 (1 member)
- 2019 Releases (1 member)
- 2020 (3 members)
- 2020 disestablishments (1 member)
- 2020 releases (6 members)
- 2021 (1 member)
- 2021 releases (1 member)
- 2022 (2 members)
- 2022 releases (2 members)
- Agencies (1 member)
- Albums (1 member)
- Blog posts (0 members)
- Candidates for deletion (0 members)
- Collaborations (4 members)
- Community (2 members)
- Companies (2 members)
- Digital Lover (1 member)
- Digital singles (3 members)
- Disambiguations (0 members)
- Discography (42 members)
- Disography (0 members)
- Documentation templates (1 member)
- Dogs (1 member)
- Explicit Songs (16 members)
- Galleries (13 members)
- General wiki templates (18 members)
- Get Up (single) (2 members)
- Groups (1 member)
- Hatnote templates with errors (0 members)
- Image license templates (13 members)
- Images (4 members)
- Infobox templates (18 members)
- Jebbies (2 members)
- Jessi (58 members)
- Jessi Wiki (6 members)
- Layout (1 member)
- Main page templates (3 members)
- Maintenance (6 members)
- Media (2 members)
- Mini albums (2 members)
- NUNA (5 members)
- Navbox (1 member)
- Navbox templates (1 member)
- Noindexed pages (1 member)
- Notice templates (10 members)
- Pages with broken file links (2 members)
- Pages with reference errors (2 members)
- Pages with script errors (2 members)
- Pets (1 member)
- Quote templates (2 members)
- Record labels (1 member)
- Screenshots (0 members)
- Single albums (1 member)
- Singles (10 members)
- Songs (5 members)
- South Korean companies (1 member)
- Stubs (5 members)
- Template documentation (56 members)
- Templates (15 members)
- UN2VERSE (1 member)
- Unattributed files (0 members)
- Userboxes (1 member)
- Videos (0 members)
- What Type of X (2 members)
- Who Dat B (2 members)
- Wiki skin images (2 members)
- YMC Entertainment (1 member)
- ZOOM (1 member)
- Zoom (1 member)