OK. This article has a proper listing of everyone. Looks like the blonde woman is Diane Nelson.
From left to right: Geoff Johns, Jimmy Palmiotti, Misty Lee (in the back), Amanda Conner (wearing two casts from a vacation spill), DC Entertainment president Diane Nelson, Paul Dini, Tom King,Jim Lee, Steve Orlando, Scott Snyder, Frank Miller, Jai Nitz, Brian Azzarello, two fellows I don’t recognize (apologies), John Ostrander, Dan DiDio, two more unknown, Paul Leviz and Mike Gold.
The last “unknown” is definitely Greg Capullo. Not sure about the other ones.