Thanks!!
I received my interview invitation around 10th of January. Like the previous threads have said, the interview were video interviews that had 3-4 behavioral questions and 3-4 technical questions that ask you to solve the questions and walk through your process. The behavioral interviews were pretty much the same as what you would expect from other video interviews (Why MFE, Why UCLA, career goals...). The technical questions were essentially maths and finance questions (nothing too advanced but require some familiarity with advanced cal, linear algebra, differential equations).
No interviews with admissions/alumni. I think the video interview is the only interview you get (correct me if I'm wrong).