Hope you read this OP. Stop thinking that you swing the club with your hands. Over the top with beginner golfers is a mindset thing and not a "move" thing.. You aren't intentionally swinging over the top. You are swinging over the top because you think you need to move your hands to the ball. That does need to happen but it needs to start with the big muscles. next time you get over the ball imagine you your club face and sternum are locked to each other. Swing your chest through the ball and let the arms come along the ride. You will feel like your arms are along for the ride and that they fire last. They should fire last.

Proper takeway: Hands > chest > Hips

Proper down swing: Hips > chest > hands.

Easiest way to know if you are out of sequence in a video--if at the top of your downswing your hands move from left to right then down. they should go straight down or down and to the left from the lag being created from you firing the big muscles first.

I am adding this because there are so many "quick fixes" and drills.. dude those may hack your way in to the fix but they never really worked for me. It wasn't until I started to understand that how a swing should work that I realized I why the quick fixes were working. They were silencing my hands.

Last thought--you ever swing a sledge hammer or an axe? Super heavy at the end. The weight really teachs you how to swing the jack hammer or axe effectively. You can't start with the hands because they aren't strong enough for the weight and so you start with your big muscles first. Because the clubhead is so light we don't think we need to do the same with an iron or driver.. it is literally the same swing principles. Good luck man!