Actually do interviews. After 20 you'll see what you should actually focus on, as opposed to cookie cutter problems that test memory vs. in-moment applications.
I've had quite a few so far...definitely more than 10. From my experience, coding problems can range from anything to anything. Wall street was more puzzly, but even the big4 sometimes ask very convoluted questions.
Not sure how to generalize everything but to solve random problems on Leetcode.