To this list might be added the Fairbanks Morse export models that were catalogued but as far as I know, were never built.
Minimal outline details were provided here:
DRT 195410 p.223 Fairbanks-Morse.gif
FM is also known to have bid on the late 1954 New Zealand railways tender that resulted in the initial EMD G12 order. A key parameter that I think was included in the tender was very speedy delivery, where EMD, with its large production capacity, had the advantage over all others. Probably not written into the documentation, but evidentially de facto was that the successful bidder had to offer an EMD design. So the chances for most bidders were somewhere between slim and none.
Anyway, FM offered a 990 hp (gross) A1A-A1A road-switcher, which was a model not mentioned in the above item.
Goodwin in Australia offered a 975 hp Alco design that could be sourced from Australia, the USA or Canada. I’d guess that it was a precursor to the DL531, which I think was not announced until 1958. And GE offered an 1100 hp A1A-A1A road-switcher that I’d guess had the 8-cylinder Cooper-Bessemer engine and was a forerunner to the U12, announced in early 1956.
Baldwin licensee Cockerill offered a 1200 hp double-cab design that looked like a smaller edition of the SNCB (Belgium) type 201, but with six axles. Whether it had the Baldwin or the Lima-Hamilton engine is unknown.
It was interesting though that Alco, Baldwin, EMD, FM and GE designs were all represented in the bids (as well as various others from the UK and Europe).
Cheers,