The Beretta 950B and 950BS are the "Minx". The "Jetfire" version is .25acp.
Not a lot in .22 Short semio-autos, other than target guns. Astra made the 2000 (.22 Short version of the Cub) and a 4" barrel "Camper" model of that also. Some other pocket guns in .22 Short were offered by Galesi, FIE, and Tanfoglio. The Colt Jr is an Astra 2000.
Any .22LR revolver will handle Shorts, Longs, and Long Rifles.
That said, from my little Astra 2000, a .22 Short is still LOUD! There is nothing quiet about it. CB Shorts/Longs are quieter. But even a standard Colibri is still kind of loud from a 2.5" pocket pistol barrel. The quietest I have found so far is a standard Colibri and a 6" barrel....no sound other than the hammer/striker and the bullet hitting the target. Super Colibris are a bit louder, CB Shorts/Longs a bit louder. Most semi-autos will hand-cycle Colibri, Super Colibri, or CB Long cartridges. I shoot all of those from various semi-auto .22 hand guns like Ruger Mk1, Unique D6, Browning Buckmark, Iver Johnson TP-22, Beretta 21A, Taurus PT-22, Jennings J-22, Intratec Tec-22, Phoenix HP-22, Sedco SP-22, etc.
Of course, if you use a Beretta 21A or a Taurus PT-22, you can shoot .22 Shorts or CB Shorts as a single shot using their tip-up barrels.
However, if you want
quiet and functionality, a revolver with a 6" barrel is the most versatile way to go. I use all of the above.

Jack