<Alford's answer to every question is Hogan!>
Well, in regard to this topic, if most pros today were using Nelson's lower body action, then the answer would be Nelson this and Nelson that and Mr. Nelson could rightfully be called the "father of the modern golf swing".
And there are reasons why Snead and other pros don't deserve the honor, as well. E.g., Snead squatted and pulled. Most pros today don't.
OTOH, there were other players before Hogan that got it right. But Benjamin Hogan had the wins and the ball striking, and the level of perfection that today is still unequaled (although TW is close). He, and he alone really deserves the honor.
I don't kiss arse, so it would be no biggie to me if it was someone else, but it just so happens Hogan did it best early on. It's very likely Hogan and I would have gotten in an argument rather than an autograph session, if you catch my drift.
Contrarily, Hogan reportedly liked guys who could care less about his "reputation". At any rate, I give credit where credit is due. And so, only by default only I've become a "Hogan fan".
Not to say, there aren't other valid ways to power a golf ball. Brian say's he's got 5 main models, and damn if that isn't about what I came up with (depending on how you split things it can be more).
Hogan worked on his...and then very late in his life he discovered a second one that pleased him.