That truly is poetry in motion. I could watch that swing over and over (in fact I have watched it over and over!)
Don't know about the rising left side. Has anyone read the Miura (I think that's the spelling) article on parametric acceleration in the golf swing. His research suggested that acceleration could be added to a swing through a motion directly opposite to the direction of the centrifugal force during the release stage of the swing. In fact, he said that this was the only way acceleration could be added at this stage. Maybe that's the rising left side we see in Hogan?
Anyway, aesthetically, that Hogan swing does it for me!