I don't know if this is as standard across the FAANG (and similarly styled companies) as an IC interview is - some companies expect managers to have been able to be successful as mid-level ICs, and some might not. Recruiters will generally happily describe company's process to you if you're applying, or will tell you if you ask if they reach out to you.

Often, you'll still have a coding (or other technical interview) and a system design interview, and a probably very similar general "people skills/career" type interview that an IC gets. But instead of another one or two technical interviews, you'll have another one or two manager-focused interviews (how to build teams, how to run projects, how to grow individuals, how to navigate a particular scenario).