I second the one 2nd from left being a Penti. My Dad had one of these (still does) - the shutter is cocked and the film advanced by pushing in a chromed steel bar which shoots out about 1" when the shutter is fired. When you get the knack it is a lighting fast camera to take multiple shots on, bettered only by a motor wind.

The third one along looks like an Ambiflex, to me, the photocell looks a little too small for a Zenit. Can't really tell, though...

By the way, what is the prize?