“Diamond cut” card - impact on grading?

[TanksAndSpartans]

Originally Posted by Aquarian Sports Cards

To me diamond cut means the cardboard isn't square I've see some pretty amazing rhomboid shapes over the years.

A card that is all right angles with a tilted image I call, well, tilted image.

This is my understanding too. The word cut in there indicates an issue with the cut not the image placement. The Bench card displayed looks like an issue with the cut whereas the Jones looks tilted. I see diamond cuts graded as long as they still fit in the holder. Hard to know what the penalty is as it isn't something I've ever seem mentioned in TPG guidelines.