Despite being informed, you still conflate infantryman with rifleman. Every member of an infantry regiment in WW2 was eligible for the CIB. I haven’t counted them, but I’d bet there were at least 40 different MOS that qualified. Yes, a machine gunner was an infantryman if serving in an infantry unit; yes, a cook was an infantryman if serving in an infantry unit. Do some research and correct your misstatements.
Read the Omar Bradley quote and you will see he does likewise I don't plan to contradict him.