question about coaches

can someone help me what is the difference between:
Coach
Assistant coach
head coach
performance coach
playing coach

Potter is the best coach of all time

Isn't headcoach coach and then assistant coach is the one who helps him. Playing coach if I am not wrong is a coach who is actively playing on the roster while coaching and performance coach I think someone who looks after the team's performance. Not sure about that one tho since like two teams have that on their roster.

head is top
coach is normie
assistant is like a copilot
performance coach is related to mental/physical health and shit

ok thx guys