Actually, I’m gonna toss one out there, because I’ve been looking for a place to put it.
People who check in with approach or Departure then request something two seconds later.
Skip the check in. Just request what you want.
Believe it or not, when I have 15 flashing strips on approach and 10 of them are meaningless spam, it doesn’t expedite the controlling process. If you’re going to request ILS or Visual, just do it. You don’t need to check in then make me come back two seconds later to reply again.
[Also, FYI, on departure, a check in is a request to follow your flight plan. Checking in, then requesting flight following is both duplicate request and technically incorrect if you’re in a commercial airliner which plans to fly above FL180. FF is VFR. Commercial jets don’t fly VFR above FL180.]