I have always perceived Hogan to have a swinger's action, and therefore imagined that he uses a triple barrel stroke pattern (4,2,3). According to HK, a swinger doesn't use power accumulator #1 actively as a power source and one doesn't hit with the right hand in the sense of palmar flexing the right wrist during the downswing.
However, consider Hogan's comments in his book "Five Lessons".
On page 93, he states -: "What do the hands do? The answer is they do nothing active until after the arms have moved on the downswing to a position just above the level of the hips." That statement implies something "active" is going to happen to the hands after the club reaches the delivery position.
Then on page 99, he writes-: "On a full shot you want to hit the ball as hard as you can with your right hand." On page 101 he writes-: "As far as supplying power goes, I wish I had three right hands!" Those two statements imply active right hand action. However, what could he mean by implying active right hand action? He obviously didn't straighten his right wrist through impact, so he wasn't using wrist palmar flexor power. Could he have been releasing power accumulator #1 actively?