One camera seems to be missing though. Back in the early 1960's I owned a 'Start' SLR. It was a bit of a mixture with elements from Exacta, in that the release was on the front of the camera not the top and the release also stopped down the F2 58mm lens (Normal copy of the Zeiss Biotar I think) It had a film cutting knife also like an exacta but on the opposite side of the body.
There was a removable prism but no other finder. The Bayonet was unlike anything I have seen before or since. There was also a bayonet to 39mm screw thread adapter probably to take the same lenses as the Zenith 3m. Shutter speeds were 1 sec to 1/1000,
Also like the early Pentacon cameras the mirror was set in place when you wound the camera on using a thin woven cord to pull the mirror into place to focus the lens.