rangers would be MBAV/EPC/CIRAS/AVS, MARSOC wear pretty much everything but the most recent photos are 90% Crye CPC in coyote. PJs would be JPC/CPC/6094/AVS.
Crye AVS is now the standard plate carrier/armour system for all SOCOM units, so expect it to become more and more commonly seen as the older stuff wears out.