Let us not forget that Alan Dean Foster (of the
Humanx Commonwealth and
Spellsinger series, as well as a number of
Mad Amos short stories) did the print adaptations of TAS, and some of the earliest story work for TMP, and the novelization of the inaugrual Abramsverse film, as well as three Star Wars books (ghosting the novelization of IV for George Lucas, and writing two original novels).
At any rate, I definitely second the nominations of Diane Duane and John M. Ford (and not just for the works cited), and also Greg Cox as well, especially for anything involving Gary Seven, Khan, or time travel.