Since my movie watching is "by streaming," it's hard to read all the credits. But recently at the end of one where they were larger, I was surprised to see that the financing was arranged by my late neighbor's son who she'd said worked in "the industry."
A very good friend from college has been a writer on several TV series and I would always look for her name--not so many to sit through as for a movie.
Another friend from years ago is now a Foley artist (makes sounds in the background?) and was trained as an accoustics engineer. I have seen his name a couple of times. They typically make a decent living, not like the stars or producers of course.
Some of the credits list enough people to make up a small town.