What is really cool is how all the different compositions /composers all blended together due to all the tracking in episodes to create "Star Trek" the original series' sound. I think that is what helped a lot of these themes become so well known. Sort of how it worked for the Star Wars films, where Williams carried over themes and cues for all 6 films. in the Star Trek movie series we sort of had the same thing with Star Trek 2 + 3, and the Goldsmith scores.
This is completely missing from TNG, DS9, VOY and ENT. TNG had so many bland scores that there are only a handful of standout cues... Inner Light, Booby Trap, Best of Both Worlds, Tin Man.