I would choose Capa, Brassai, Lewis Hine, Stieglitz, Henri Cartier-Bresson, and last seat is a toss up between Edward Curtis and Eugene Smith.

We would chat about moments of their lives that in their own opinions stuck out the most to them, eureka moments, first hand stories about their adventures and travels, lifelong regrets, and how the afterlife is. And their opinions on the state of photography today. Then we all get drunk LOL