The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- 16384ists (1 member)
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- A wee oddo (2 members)
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- Accelerationists (13 members)
- Aesthetic philosophy (1 member)
- African Ideologies (2 members)
- Agnostic (1 member)
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- Alt- (1 member)
- Alternate History (3 members)
- Ambiversion Spectrum (1 member)
- American Ideologies (26 members)
- Anarchists (91 members)
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- Anime (11 members)
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- Anti-Alcohol (2 members)
- Anti-Capitalists (1 member)
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- Anti-Communists (6 members)
- Anti-Fascism (1 member)
- Anti-Ideologies (24 members)
- Anti-Ideology (4 members)
- Anti-JoeyFloppaists (1 member)
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- Anti-Optimists (1 member)
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- Argentine Ideologies (19 members)
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- Art for improvement (9 members)
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- Aryans (5 members)
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- Attributed Files (887 members)