That is some impressive list! Are you his new agent? Or have you done something truly terrible in a previous life? 😉
The only things I can think of are:
Star Wars Adventures In Colors And Shapes (1984) - https://www.discogs.com/release/10415528-Anthony-Daniels-2-C-3PO-Star-Wars-Adventures-In-Colors-And-Shapes
and not 100% what you are looking for, but Anthony Daniels did the narration for the audiobook for his own autobiography:
“I Am C3PO” (2019) - https://www.penguinrandomhouse.ca/books/639709/i-am-c-3po-by-anthony-daniels/9780744021325
^ I guess he very likely also did some C3PO voice work for it?
Although it was not playing C3PO, there is that short cameo he did in AOTC and ROTS playing Dannl Faytonni:
https://starwars.fandom.com/wiki/Anthony_Daniels#Other_roles (and Tak in Solo, and CZ-3 in Star Wars)