CNC cabinet plans tend to be the sort of information that people are incredibly reluctant to share. Most of them were developed by guys who actively cut cabinets for money, and they are not sharing, and have in the past wanted large amounts of money to sell their plans when they went out of business.
Also, related. It is super annoying when someone who cuts repro cabinets in high volume has an obvious mistake in their plans, which they never fix and just keep cranking out cabinets that are visually wrong. I see this most commonly with Midway cabinets, someone makes cabs in high volume that have a slight angle between the monitor bezel and control panel, while there seem to be a few variations on Midway cabinets that are a cross between the Pac-Man shape and the Ms. Pac-Man shape.