I picked up one of the $17 boxes of these at Walmart (they do look pretty nice). Of the 4 included Printer Proof cards, two are "normal" and two appear to be either an error or an unlisted variation. I've searched everywhere online and I can't find any mention of what I'm seeing.
These two are cards #89 (Nick Lodolo) and #141 (Mike Yastrzemski). The linked picture also shows #43 (Judge) as an example of a "normal" version. https://drive.google.com/file/d/1XNekzppNdwshGflWrqqQzfnxM4suTXxq/view?usp=sharing
The two odd cards appear identical in most every other way to the base and Printer Proof parallel, except for two things;
1) The player name at the bottom front appears intentionally blurred out (like reading with 20/400 vision or something)
2) The Topps Gallery logo in the upper left isn't centered in the upper left black triangle, rather it is sitting about 5 mm lower, and the words "Topps Gallery" and the bottom edge of the triangle logo are now running into the player picture frame border.