One of those, who impressed and influenced me strongly wasn't mentioned yet:
Willy Ronis ( still alive , 96yo) a contemporary of HCB, Brassai, Doisneau, Izis and all the others which stand for what we nowadays call La Photographie Humaine.
He managed to catch the positive moments in the hard life life of the working class and the small bourgeois, a very human, compassionate and mostly optimistic look on the hard life in the less bright quartiers and suburbs.
Doisneau would be in my fab four too, for the same reason, also Brassai and Atget, the latter from different reasons ,tho he was a people shooter too, but in a more documentary way .
All of them were able to connect documentation and art in a perfect way and maybe they influenced me so strongly because this is what fascinates me most in photography. When the documentary element gets lost completely, the thrill is off.
bertram