On the 22lr and 12ga. there are so many variations it's the cartridge that's iconic.You covered a lot right here, but are we talking specific makes and models, or any 12ga or .22lr? The calibers are certainly iconic.
Winchester 1897
Remington 870
Ruger 10/22
Remington nylon
Marlin 60
Winchester model 70
Rem 700
BAR
A5
Just to name a few.