If you watch the touring professionals, you will see that there are a lot of similarities to the way their games are played. Most of their stances are similar, the way they swing the club looks similar, the way they chip, pitch and hit bunker shots looks similar.
The reason for this is that over many decades golf professionals have worked out the easiest way to play the game. They have worked out how to move the golf club the best way to get consistency, accuracy and distance.
There is one part of the game, however, that does have quite some individuality to it, and it is putting and particularly it is in the way professionals hold the club.
Because putting is the slowest moving and least dynamic part of the game it doesn’t require the same amount of athleticism, leverage and speed that the other parts of the game require. As a result, many methods can be successful.
The main area of interest here is the way they hold the club. All the variation you see here is an attempt to minimize hand and/or wrist action. Excessive movement in the hands and wrists is your absolute enemy and will cause chaos in your putting game.
So, what you have is the best players experimenting with different hand and wrist positions, so they have the ultimate amount of control of the putter. This control has two aspects. One is control of the club face angle through the stroke and the other is control of the speed of the stroke.
If your hands and wrists are out of control and dominating your putting stroke then you can’t control the face and you won’t be able to hit the ball online. And, if you don’t have control of the speed of your stroke you will not be able to control your distance.