Q: I want to buy a Chromebook to run Windows or Linux -- which should I buy?
A: Buying any modern (2017+) Chromebook with the intention of running Windows or Linux is a terrible idea, period. Most can't boot anything other than ChromeOS, and those that can run it poorly. Older models may fair better compatibility wise, but there are still lots of caveats, and it's not recommended to buy a Chromebook as a cheap Linux device. The days where Chromebooks ran Linux well ended with the 2015 models.
Also the "Supported Devices" part of the site suggests going here: https://wiki.galliumos.org/Hardware_Compatibility Which does not show anything working post 2019.
Am I missing something?