The top two are obviously familiar, but certainly wouldn’t attribute the first one to that movie. I don’t think I’ve ever heard the next two phrases used or remember them from the movie, and never heard anyone use ‘mostly’ as a reference from that movie.
Maybe it’s an insider thing
Makes sense, but it still seems like all the recognizable ‘quotes’ mentioned are quotes the movie used, and not ones that are came from the movie itself, to the point where it would only be in very specific context where anyone saying them would be quoting Aliens.