How rare are 273 Commando factory pistons .030 over ?

OEM 273 piston part numbers for 4 bbl engine.
STD odd bank 2585 267
STD even bank 2585 268
.005 odd 2585 269
.005 even 2585 270
.020 odd 2585 271
.020 even 2585 272
.040 odd 2585 273
.040 even 2585 274

Then there are the 2 bbl pistons, at std, .005, 020, .040, and low compression export pistons at std, .005, .020.
This info is right from the Mopar factory parts manual.
Thanks . So were the factory standard pistons TRW ?