You are not the first to wonder this…
https://forum.v1e.com/t/tft-firmware-all-seems-to-be-for-printers/34593
Most of us find this stuff highly confusing and frustrating! AFAIK there is not a perfect cnc profile for the ‘touchscreen’ mode on these displays… many have tried -
https://forum.v1e.com/t/mpcnc-btt-touchscreenfirmware-for-tft35-2-0/16793?page=1.
It is not an easy task, there are many interconnecting functions so be warned…it is a very deep and very wide rabbit hole! and AFAIK what you currently have is what V1 supports.