The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- 1909 establishments in Illinois (1 member)
- 1950 births (1 member)
- 1969 in LGBT history (1 member)
- 1973 establishments in Missouri (1 member)
- 20th-century African-American people (1 member)
- 20th-century American women writers (1 member)
- 21st-century African-American people (1 member)
- 21st-century American women writers (1 member)
- African-American LGBT people (1 member)
- African-American women writers (1 member)
- African-American writers (1 member)
- All Wikipedia articles written in American English (1 member)
- All articles with dead external links (2 members)
- All articles with unsourced statements (2 members)
- All pages needing cleanup (1 member)
- All stub articles (1 member)
- All uncategorized pages (1 member)
- American lesbian writers (1 member)
- American non-fiction writers (1 member)
- American writer stubs (1 member)
- Article message templates (1 member)
- Article message templates with missing parameters (1 member)
- Articles with dead external links from November 2021 (1 member)
- Articles with dead external links from November 2023 (1 member)
- Articles with dead external links from October 2022 (1 member)
- Articles with hCards (1 member)
- Articles with hatnote templates targeting a nonexistent page (1 member)
- Articles with invalid date parameter in template (4 members)
- Articles with permanently dead external links (2 members)
- Articles with short description (7 members)
- Articles with unsourced statements from November 2021 (1 member)
- Articles with unsourced statements from October 2008 (1 member)
- Articles without Wikidata item (1 member)
- BDSM activists (1 member)
- BDSM organizations (2 members)
- BDSM writers (1 member)
- Biographical templates usable as a module (1 member)
- Buildings and structures in Wilmette, Illinois (1 member)
- Buildings and structures infobox templates (2 members)
- CS1 Chinese-language sources (zh) (2 members)
- CS1 maint: numeric names: authors list (2 members)
- Catholic secondary schools in Illinois (1 member)
- Chicago navigational boxes (1 member)
- Citation Style 1 templates (1 member)
- Citation templates (1 member)
- Commons category link is defined as the pagename (1 member)
- Commons category link is locally defined (2 members)
- Coordinates not on Wikidata (1 member)
- Counterculture of the 1960s (1 member)
- Cross-reference templates (1 member)