They don't list machine damaged coins. They are created by the machine altering them during the striking process. Even in a roll, these will vary strike to strike because of the die movement during the strike.

These all came from a roll or two of OBW rolls. All images show the same marker, so they were all from the same die pair. But the difference is that the MD affected each differently.
They list variety coins like doubled dies, RPMs, OD, OMM, but not
Machine Doubling because they are not a die issue, but a coin striking issue.