Enlarging the photo I saw 1 SKS, 1 Mini-14, and a M1 Carbine, but that’s about it on the semi-auto side.
I didn't see a bayonet lug on the M1 Carbine, so I'm guessing it's a post-war Iver Johnson. If that's the case, it's really more of a straight-pull bolt action than a semi-auto :-)