Data Structures And Algorithms Q&A and Videos

I want to know if I'm ready to start interviewing. Here's some additional context:

• I'm confident with easy and easy-medium questions, 50-50 with normal-mediums, and I'm having tough time with harder-mediums and hards.
• I can identify and apply most patterns but the topics I struggle with are heaps, bit manipulation (python sucks here), backtracking, and dynamic programming.
• I'm more confident with System Design than LeetCode due to professional experience. I also studied through 4 use-cases in Grokking the System Design for practice.
• I've done 217 Leetcode questions total in the span of 1 year. Of those, 100 new questions were done in the past 6 months. I also re-do questions using spaced repetition in a Notion table with ToDo,
• For recruiter phone-screens I kinda struggle to explain what I do in my role since I do a little bit of everything. I need to work on a concrete explanation.

How common is leetcode/hacker rank at FAANGMULA companies and startups for initial tech screen?

How common is it that there are companies that interview similar to Imbue (another YC backed company, whose technical interviewing process I posted below) and SourceGrap h where you actually instead are asked to code on the fly with your actual environment (this to me feels way more comfortable than having folks throw out random questions at me)?

Interview Process length - I've seen rounds go for 8 for some companies (for even Google non-technical a million years ago I've seen it followed a similar format without technical at least like 5 rounds. If someone can post how long their average interview rounds were (how many interviews, how many technical screens, easy to hard, and how long did it take until you got an offer / knew you were rejected - a month, 6 months etc.?). I've head so many stories ranging far and wide over the years and wonder what the average is during this market, which feels longer than a year some people, even those who were laid off at FAANGMULA companies.

Interview #1) Recruiter Reach Out, Resume Submission, and Behavioral

Interview #2) Tech Screen #1

Interview #3) Behavioral with Team Member 2 Years Your Senior / Tech Screen

Interview #4) Behavioral with Team Member that is your director/higher up manager by at least 2 levels or something / Tech Screen #2

Interview #5) Behavioral with Team Member that is your actual position (peer / Tech Screen #3)

Interview #6) Vote by Committee / Group Interview / Panel or something

Any insights into the interview process more in detail will be helpful! Thanks!