I included hot (120F) water for developing my carbon prints.
Potassium oxalate for platinum/palladium
Ilford PQ Universal and Dektol for sheet film (and Dektol for silver gelatin paper)
D-76 for roll film, and for sheet film when I do not need the major contrast boost.
Plus odds and ends, such as D-19 for contrast (someday). Technol for Tech Pan