I assume you are asking for disc brakes? Everything is gloss black. I've never seen a chart, but finishes on OEM Mopar master cylinders is covered in my Mopar Action article that a pdf is posted here somewhere.
I've usually used semi gloss black when I painted a restored master cylinder I'm installing on one of my cars. Even NOS ones I've had were semi gloss, but I think that is because the gloss faded some with time and I am looking at a 40-50 year old NOS part.