"Cooper Freshley" in the file header/exif data looks like it'd just be the user name – could of course be a hint, like a nod towards "CF".
EXIF data can be inspected for example online via page: 29a.ch
Ran a tool to detect stego content on all five images, and only hrcvid2.JPG did show possible hidden content – signature apparently from "jphide"
… but there can be false positives/.
Will try a bit more …