I don't have much experience with the laser machines, but I'll note a few things:
1. These machines can be updated to support later models of iPhone if you buy them from companies that will continue to support the machine.
2. These should work on other phones will a rear glass panel, the correct pattern just needs to be programmed into them.
The machine that I've seen used is https://m.rewa.tech/detail/back-glass-housing-separator-laser-marking-equipment-set-oem-new.html , and it seems to be well supported.