I might be able to help some, if I can find the time. I can't provide a comprehensive package like your list asks for, but here is a start.
For the limit switches I suggest Automation Direct part number AAM2F43Z11, I like to set them up in a drive-by configuration, where if the axis over-runs its hard stops a bit you're not crushing the switch. If any of these will be used as homing switches you should replace their snap action contact blocks with the teasable version: Automation Direct part number AGX11-SWITCH, I used that in a project a while back and it worked great.
You probably need 6 limit switches for the X and Y axis total. How about the Z axis? What does that one look like? I might suggest just one upper limit switch for that. The bottom limit is going to vary depending on your table height and workpiece thickness. Does your torch holder have a collision sensor to detect when it runs into a protruding edge, like when a smaller piece tips sideways?
For the cords from limit switch to control cabinet I would suggest something like:
Automation Direct part number CC600-16-3S-1 You don't want to use this for circuits that need to flex all the time. I would use this wherever it can be strapped to the frame, etc.
For any limit switch cords that have any flex points or travel through a flexing cable tray I would use something like Automation Direct part number A3131603-1
Both cords are shielded. I would probably use only the second one on the entire project. In applications like this, I like to route the low voltage signal wires through a separate conduit, not the same one as your h.f. power cables. If strapping to the frame, bundle them separate and keep the two bundles separated by several inches, and don't cross them directly over each other. Ground the shields only at the computer end and isolate them at the switch end.
You don't have to get everything from Automation Direct. It is a supplier I use a lot, so I will end up referring to them frequently.
Drawing wiring diagrams is fun. Mostly I sketch them up using paper and pen. Maybe sometime I'll find time to learn how to do it in Qelectrotech.