Nice collection - I have a Mat 124G as well, nice cameras, these.
The behemoth range finders are strange, bigger than even large SLRs... but yeah, they can make good pics quietly. I like that the Canon is smaller.
Of the back row, you should definitely be able to use the Agfa, and depending on which Kodak model, that one also (some take 120 film, others take obsolete sizes). And the Duaflex is THE classic Through The Viewfinder cam - just hook a turret on it, and shoot down with a macro.
Heather, some day those cameras will be considered classics
I think a couple of the fast lens Olympuses already are. You know, built like (plastic) tanks, low MP, but street shooters all.