Perhaps like @Jonzynator, I approach cable management by considering how things would be done as if the system was mission critical. I dont go as far as cable lacing but I do make custom mounts and redress wires to minimise flexing and EMC.
I use Octoprint with POE on my printers and like to mount the Pi and POE adapter in or on the chassis with nothing hanging off the printer except the mains and ethernet cables. On a printer like the Ender 6 which has some cable management designed in, the installation is relatively straightforward. I printed a housing for the POE, I did need to cut an access holel for the ethernet cable in the plastic panel but no other mods to the printer were needed.
The Pi 4 is mounted inside the chasses and to cope with the heat I use a large heat sink (a ¼ inch aluminium angle bracket) mounted to the 2040 extrusion for additional heat dissipation.
I avoid drilling holes in my printers if possible and use industrial Velcro for mounting things lthat are not easily attached to an existing hole or extrusion, like the EZABL box in the picture below. In my experience the off-brand hook and loop adhesive isnt reliable.
In summary, the issues I consider when planning cable management are: Cables run to minimise flexing and EMC, add-on modules securely mounted, temperature producing items with (ideally) passive or good forced air cooling.
