The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Library works by Alexandra Kollontai (8 members)
- Library works by Alicia Jrapko (1 member)
- Library works by Anna Louise Strong (1 member)
- Library works by Antonio Gramsci (3 members)
- Library works by Carlos Marighella (1 member)
- Library works by Che Guevara (2 members)
- Library works by Cheng Enfu (2 members)
- Library works by Chris Harman (1 member)
- Library works by Clara Zetkin (2 members)
- Library works by David Graeb (1 member)
- Library works by Deng Xiaoping (14 members)
- Library works by Department for Strategic Services (Provisionsal) (1 member)
- Library works by Domenico Losurdo (5 members)
- Library works by Edward Said (1 member)
- Library works by Elizabeth Gurley Flynn (1 member)
- Library works by Enver Hoxha (7 members)
- Library works by Eugene V. Debs (7 members)
- Library works by Evo Morales Ayma (1 member)
- Library works by Fidel Castro (6 members)
- Library works by Frantz Fanon (3 members)
- Library works by Friedrich Engels (19 members)
- Library works by Gabriel Rockhill (3 members)
- Library works by George Jackson (1 member)
- Library works by Georges Politzer (2 members)
- Library works by Georgi Dimitrov (1 member)
- Library works by Georgi Plekhanov (2 members)
- Library works by Grover Furr (3 members)
- Library works by Gus Hall (1 member)
- Library works by Harry Haywood (2 members)
- Library works by Ho Chi Minh (4 members)
- Library works by Ilan Pappe (1 member)
- Library works by Jones Manoel (1 member)
- Library works by Joseph Stalin (17 members)
- Library works by Karl Marx (25 members)
- Library works by Kim Il-Sung (0 members)
- Library works by Kim Il-sung (0 members)
- Library works by Kim Il Sung (6 members)
- Library works by Kim Jong-Il (0 members)
- Library works by Kim Jong-Un (0 members)
- Library works by Kim Jong-un (1 member)
- Library works by Kim Jong Il (4 members)
- Library works by Kim Jong Un (2 members)
- Library works by Kwame Nkrumah (1 member)
- Library works by Lenin (1 member)
- Library works by Leslie Feinberg (3 members)
- Library works by Liu Shaoqi (1 member)
- Library works by Louis Althusser (1 member)
- Library works by Ludo Martens (1 member)
- Library works by Mao Zedong (19 members)
- Library works by Martin Luther King Jr. (2 members)