MacBook Pro 2015. I've used ArchLinux on this with no issues. Used a 2013 MacBook Air before that, same OS (I actually used `ssh | dd` to just copy the image, rather than reinstall anything).
The MBA needed non-kernel driver (which was a breeze to install anyway). The MBP uses an in-kernel one, so no issue there.
It doesn't get more MacBook-like than that. :P