Ok, across the front of the stage (left to right) I can make out:
Mick Fleetwood, Peter Green, Pig-Pen (Ron McKernan), Bob Weir, Duane Allman, Gregg Allman
At the rear of the stage, I can identify:
Jerry Garcia (way in the back), Bill Kreutzman (drums), Berry Oakley, Butch Trucks (drums), Phil Lesh.
The two people on stage I can't identify are...the guy standing up playing tambourine between Berry Oakley & Butch Trucks...and the guy with his back turned, behind & to the right of Gregg Allman (obviously with a drumstick in hand...possibly it is Mickey Hart?)
No sign of Danny Kirwan or Dickey Betts, that I can see.
Among God's creations, two, the dog and the guitar, have taken all the sizes and all the shapes in order not to be separated from the man.---Andres Segovia