AND- just to confuse matters thoroughly- there WERE other .22 rimfires. pretty well considered obsolete. and loved mainly by cartridge collectors. There was the .22 Extra Long, the Winchester .22 Auto, Remington .22 Auto, and the .22 Special. There was even the .22 ILARCO, a shortened .22 Magnum made for the American 180 machinegun. The .22 V/L CASELESS cartridge made for the Daisy.
NONE of those interchange with .22LR. But they are kinda snazzy in your cartridge collection.
What we have here is... failure- to communicate.