I never sort straight walled pistol ammo.
I have NEVER, in 35+ years of reloading 9x19, worried about the head stamp.
If you want the best accuracy, find those few cases that are 0.750-0.754" in length. These will minimize head space and produce the best accuracy.
The big danger in 9x19 is too small a COL and bullet set-back into the case when the round is fed up the ramp.
Review in your manuals and you'll have few problems.
I don't sort 9mm cases except nickel (which I use for JHP rounds). Sure can tell the S&B just by feel in the reloader, though. Tough to get the old primer out and tough to neck size. Still works, though.
I've heard you seperate the brass so you'll have a more accurate group
I have had trouble with federal in 9mm and of course the small primer in 45acp..... I sort my brass in the winter when I am not likely to shoot....
Out of the last 1000 45 cases primed I found over 150 small primer (all Federal).