What are the interview questions aligned towards? More soft skills, or are there still a bunch of algo questions, etc?
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).
If you don't have enough engineering manager experience, you can generally join as an IC (with a full IC interview loop) with a view to converting to manager. You may have additional discussions or even interviews around management as well, especially if converting to manager is something you identify as a career goal (as opposed to an option).
Converting to manager from an IC is generally pretty easy if you've shown good aptitude for leadership - the larger companies generally find it a lot easier to hire ICs than good managers externally, so internal conversions are necessary to keep up with demand for quality management attention on teams.