The type you refer to, like the one I posted are about all there is. If man didn't get a photo taken for mother locally, and some didn't, then there well may be no record of the man whatsoever. Cameras weren't a family toy like today. Even when I went to basic, the only way we got pics was because a man had a Polaroid and it made pics on the spot. We paid him $1 for each picture in 1974. I was only paid $330 gross then... There are cases of soldiers of the great war that have no known pics. Imagine today, a man growing to 20 odd years and there being no known pics of him?
Many units had giant group photos done just before deployment, you can't really make out anyone in them, in many cases.