There seems to be two ways people are showing a hi crotch. One the hands are locked low on the calf (like you show in your videos).
The other the offensive man is turning the corner hard so that he ends up 90 degrees to his opponent. His left hand (if he is a right handed shooter) wraps deep and high on the thigh and his right hand transitions from the leg to the far hip or upper thigh. To finish he kind of runs him down.
What are the pros and cons of both of these finishing styles and what type of wrestler should use each?
low on calf for most high
low on calf for most high c's really only time it would change is if I can change off to double quickly or putting man into crackdown position. i would not change your grip on the leg if that is what you are thinking.