I think virtually ALL tour players and good amateurs have CLUBHEAD LAG. They maintain the pressure or stress on the shaft until separation. They have to... or they couldn't play to that level.
I remember old pictures of Tom Weiskopf... who was voted several times, I believe, as having the best swing on tour. He had a pretty big pulley, and had little or no forward lean of the shaft at impact. But , he must have had CLUBHEAD LAG, or no 15 wins including a British Open.
What more and more players seem to have today is BOTH... CLUBHEAD LAG and #2 ACCUMULATOR LAG. Players like Sergio Garcia, Charles Howell, and Trevor Immelman have both. Weiskopf had some #2, but his Random Sweep Release made this less apparent.