[Known-Good Hardware Master List] Hardware Capable of Running StartOS

The Lenovo X270 is on the list of capable hardware running StartOS. Yet I have tried to boot from an existing StartOS-drive as well as installing it on a different SSD on an X250 and it didn’t work (it installed, but didn’t boot). I’m struggling to understand how this is possible since the machines are so similar. Any pointers? And can I be sure it’ll work if I get a X270? Thanks!