>>7340674Beast machines isn’t exactly recent, but thrust was memorable
Cybertron Ransack
Semi-named-extra Cybertron Lugnutz
Convention/club comics and exclusives Flamewar
A few movie toy/comic-only literally-who’s like brimstone and reverb
And the toyless Mohawk from TLK (notable only because he was actually named and in the movie)
Those are the ones I could think of.
(Would be easier if the tfwiki had altmode categories for characters)