The list of older RF cameras that would be good for street shooting is
massive. Even the list of those that I have personal experience is rather large.
Personally, I've used the following for a significant period (many many others for short periods):
Leica M3 w/ 50mm f/1.5 Summarit
Leica IIIa w/ 50mm f/2.0 Summar
Nikon S2 w/ 50mm f/1.4 Nikkor
Nikon SP w/ 50mm f/1.4 Nikkor
Canonnet QL-17 "new" (40mm f/1.8) (often mistaken for a "G-III")
Canonnet QL-17 G-III (40mm f/1.8)
Zorki-4 w/ 50mm f/2.0
The M3 and Nikons are rather expensive, even in rough user condition. The IIIa (circa 1936) is rather old and the lens I have is somewhat marginal by many peoples standards; newer models from the 3arly '50s can be affordable with slower lenses but f/2 and faster get expensive. The Zorki, like other FSU (Former Soviet Union) cameras, is a bit of a variable beast. Mine is very good and performs perfectly even though its a quarter of a century old. Many out there are in rather marginal condition internally even though the look good.
The more mainstream "amateur" or "tyro" RFs from the mid-50s through the later '70s are generally the ones that fit the "inexpensive" label. Early in that period German models dominate and Japanese models begin to dominate after the mid-60s.
I suggest that you research the classic camera profiles at CameraQuest:
Classic Camera Profiles
and lurk on the Rangefinder Forum at:
Rangefinderforum.com Portal - Rangefinderforum
There is a lot of excellent information and opinion on both sites.
For my use, the best inexpensive model with a fast lens are the Canon models I list (both are nearly identical and much smaller than the earlier Canonet 17 and QL-17) with the Olympus RD coming in a close second. The Olympus RC is also a good choice being more compact but has a slower lens (f/2.8).
If you only need an f/2.8 lens, there is a nearly infinite list of German models from the '50s and early '60s. Many (read: almost all) have excellent lenses and if in good condition will deliver excellent images.
Most early cameras won't have meters as a rule so you will want to get a separate meter. Most of the later models do have meters but use batteries that are no longer available. There are substitute batteries but using them may require that either the meter be recalibrated or that your learn how much to lie to the camera when setting the ISO.