Looking through my copy of Stoeger's 1940 "Shooter's Bible":


Browning offered the Lightning version of their Superposed "with special skeet boring" in both barrels.
Marlin made a special Skeetking version of their Model 90 OU in all gauges from 12 down to .410.
And Remington, as noted above, offered their Model 32 OU as a skeet gun. 12ga only.