I knew a teaching pro could do a dozen guys, including R.T. Jones, both left and right-handed. Made solid contact every time. In fact we had a game where we would call out a pro's name during his backswing and he would imitate the downswing.
Is there anything to learn here? How can Richard Gillot, Jacobson and my friend make solid contact using very different backswings, handpaths, pivots, body position at impact etc.
Suggestions
All good swings have one thing in common that we don't see in the videos.
Misdirection. The tics, waggles, shrugs, looks to the target, backswing triggers, top and finish positions are copied perfectly; this we see and it prevents us from seeing that the imitator is using his normal swing underneath it all.
These guy have extraordinary eye-hand-body coordination.
Nothing special. All touring pros could do this if they wanted to; that is why they are touring pros.