I'd have to say
Govert de Roos and
Paul Huf.
Unfortunately, I can't find an online gallery with Huf's work, since he died in 2002 and his heirs don't share his work online.
There is an award in his name here in Holland and he is remembered as one of our greatest photographers here.
Another great young photographer is
Paul Paper from Lithuania. I love his work and had the pleasure of meeting him while he was traveling through Europe. I love the fact that he still does everything with an analogue camera.