Single word for cast and crew of a movie
Solution 1:
I would call that person a cineast or "cineaste," a "movie worker", a "movie professional", or -- more commonly -- a "participant to a movie."
cineast: any person, esp. a director or producer, associated professionally with filmmaking.
Solution 2:
Everyone who is in a movie or works on the movie should be on the credits. So if we want to list everyone that was involved in a film, I would say they were credited.
Also it seems like the term is fairly common (google).
Solution 3:
Old plays simply credited "The Company."
Solution 4:
You are looking for everyone involved in the creation of that movie, so say just that, involved. It's a single word. And it nicely sidesteps the issue of whether they were credited.