Types of academic supervisor
Engineering and computer science
Twenty-two students. Half an hour every six weeks, most of it him reading my slides for the first time. The ones who did well had published before they arrived.
My thesis was a deliverable for his consulting client. Hired by that client, one publication in four years. Nobody frames that trade-off up front.
Unpleasant in group meetings, and every one of his students finished on time and placed well. 'Is he tough' gets the wrong answer. Ask whether they finish.