"Small and inconspicuous" is not a requirement for a camera used for street photography. Human behavior is far more important. For years, I did street photography with a Mamiya 7, sometimes with the large-ish 43mm lens and its finder on top of the camera. What I do find important at this point in my life is carrying something light and easy to use. FWIW, I usually use a Fuji X100T, which meets those two criteria but it's really more of a personal thing as to what is easy to use.