I'm not sure of the specifics of the modern process, but the images are usually done on a computer now, and some presses can make the plate on the press, all electronically.
I'm thinking the cards are done in the software in layers representing the colors. If that's what's done, the extra text might be its own layer. It looks to me like the Clemente and Williams don't have a light area for an auto. So maybe someone forgot to turn the autograph text layer off and the system made a plate with the text on cards that shouldn't have it?
Steve B
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