There is a decent amount of info if you hunt a little bit. They are done with writing a book, but just are editing it, so it will definitely help.Just found this 90 minute video with Mike Adams and Terry Rowles and it was very interesting indeed.
Apparently after testing and measuring 90+ pga tour pros through their systems they found a cause and effect of why PGA Pros swing the way they do. It all seems to be related to body part 'shape/length/flexibility' . He also shows in detail the swing patterns for many PGA Pro golfers providing a reason for their backswing and downswing planes and how they pivot . Posture and setup (unique to the golfers body) seems to be of ultimate importance in dictating the dynamics of the swing.
They found one third of golfers they measured pivoted on their lead leg , another third pivoted centrally , and yet another third pivoted on their rear leg all (each type of pivot will have different lower body biomechanics).
I wish the other follow-up episodes were free to view as they get into more detail about how the grip can change your swing action.
On Instagram, both Terry and Mike have decent content. Check out Kelan McDonough's Instagram too - he is Mike's assistant and has been generous with his time answering some questions via DM. Terry Pilkadaris, Tina Tombs, Doug Spencer are all great follows too as far as related content.
Also, if you have YoutubeTV, check out the Chris Como swing expedition with Terry - that could help too.