Hand over the job and the right to decide
Go back through the five kinds and their reasons. They look different. The same two things are missing each time.
A named person who is allowed to decide. And a written standard for what good looks like.
The question needs someone else who knows the answer. The approval needs someone told, in plain words, what they may say yes to. The fix needs a standard on paper, so the person doing the job can check it before you ever see it. The customer needs a second name they trust. The disagreement needs someone named to settle it.
That is where most owners get caught. They hand over the job and keep the right to decide. Purdue Extension, in its guide to structuring small businesses and farms, describes the owner who still wants everyone reporting to him or her "rather than delegate responsibility and authority to a middle manager."
Look at those two words. Responsibility is the job. Authority is the right to decide. Hand over the job without the right to decide, and they still have to ask you before they finish it.
Not all five at once. Five kinds, each needing a person and a standard, is too much to start together, and you are the one who would be doing it. Pick one kind. Move it. The other four keep coming to you while you do, and that is fine.