The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- 2000 (1 member)
- 2001 (0 members)
- 2002 (1 member)
- 2003 (0 members)
- 2004 (6 members)
- 2005 (0 members)
- 2006 (1 member)
- 2007 (2 members)
- 2008 (2 members)
- 2009 (4 members)
- 2010 (2 members)
- 2011 (2 members)
- 2012 (6 members)
- 2013 (8 members)
- 2014 (9 members)
- 2015 (9 members)
- 2016 (6 members)
- 2017 (26 members)
- 2018 (14 members)
- 2019 (32 members)
- 2020 (14 members)
- 2021 (7 members)
- 2022 (11 members)
- 2023 (0 members)
- 2024 (3 members)
- 2025 (14 members)
- Abbott,E A (6 members)
- Airey, J (1 member)
- Algebra (2 members)
- Allen, P (3 members)
- Anatomy (1 member)
