Which photographers would be most likely to bring a good bottle of wine if invited? 
Outside of that consideration:
Karsh
Jeff Wall
Diane Arbus
I'd say William Eggleston, except he apparently isn't much of a conversationalist.
Edward Weston
Julia Margaret Cameron
David Bailey

Outside of that consideration:
Karsh
Jeff Wall
Diane Arbus
I'd say William Eggleston, except he apparently isn't much of a conversationalist.
Edward Weston
Julia Margaret Cameron
David Bailey