These appear to be 100% legal to me. Most people have only "mastered" spinning the ball in one direction so it consistently "jumps" to one side. Once you realize that then adjust your expectation on where the ball will end up.This YouTube video shows the kinds of spins I was facing today. Are these legal where you play? No one was calling them illegal today.
https://youtu.be/-uTYNnZWPpU
Also a recommendation is to catch the ball closer to the ground bounce before it has time to move to the side too much.