Dude in the gray suit / back row / just left of Podesta head 1st pic
Ben Murray.
Wish we could see the chin on the guy to the right of Podesta.
Would be able to match by mole.
Possibly Will Bohlen?
I don't have a LinkedIn acct so can't look up.
If you (or someone reading this does) he's on there.
If he was at Podesta Group in '09 then he was at the party almost for sure.