you can add to the list the .40 Taurus Revolver cartridge, although it is very scarce, as it was a failed contract for Taurus of Brazil.
CCI also was going to make the 7.62 NATO rounds, at least a Traiing Blank, I believe for a possible Govt. contract, but I am only familiar with an unload prototype case with the N CCI R 45 AUTO headstamp, a bunter used purposefully, probably simply for identification purposes. I have on in my collection, so am positive of its existence. I don’t know if any loaded, properly headstamped 7.62 x 51s were made or not, it is outside of my collecting field.
Of course, in the “Common” calibers, there are many, many loadings that are NOT common. In 9 mm Luger, counting all variants made by CCI, I have 112 specimens, and I am sure that someone who specializes only in this caliber probably can top that considerably.