Besides your standard questions, expect analytical questions at every round, all based around data. PM exercise involves you trying to solve a problem they are experiencing/just experienced. The 1hr prep time limit can sound quite stressful, but you're not expected to answer all the questions. As long as you are naturally data-driven, collaborative & think clearly, you'd do fine.
Sigiloso
Brushing up on my A/B testing & metrics (KPIs, guardrails, tradeoffs, effectiveness). Bit of knowledge on data science definitely helped. Be collaborative, make good use of your interviewer.