I did on campus recruitment. First round on campus, final round on site. Each round consisted of 2 back-to-back 45min interviews, with a behavioral and case interview component. The questions were fairly standard but the cases were difficult. The interviewers will always press for more, but they will guide and help if you get stuck.

Multiple rounds with consulting case interview portions and fit portions. Each round of interviews had multiple interviews, and the interviewer gets more senior as you progress through the interview process