OK Kevin,
Your glock .22 conversion is useless with any kind of .22 short, CB cap, shotshell or non standard .22 cartridge. For that reason my basic battery .22 is a revolver.
And your choice of .22s is the most important item in the equation.
Pick a C.F. handgun(s) of your choice to round things out.
As of today, and for myself, I want an LCP II, a 4" model 66 (or 65), a sig p320, and the obligatory 1911 .45.
I disagree that .22 choice is the most important; but perhaps it is to you. With the price and availability of .22's these days, the .22 has lost a LOT of it's appeal IMO.
Most people don't use non-standard .22 ammunition which is why I put the conversion unit in my list.
All that said, I actually agree with you on a personal level. My favorite .22 by far is my S&W 617.
