To me this is an important question because it could signify that P-D sequencing is indeed being used by the "non-users" but in a different way than in the overly simplistic TPI inane models.
I agree there seems to be a lot of evidence showing p-d sequencing. Just not always in the prescribed "ideal" order.
Are you talking about the "stretching, riding, fanning" classifications?
These can be done in any of the sequenced parts of the golf swing in any order resulting in a multitude of possible combinations of sequencing differences from the "ideal".
If not those classifications, what models? I guess I should read up on TPI more.