I think in general there is just very little hardware as attractive as a MacBook Pro that supports Linux well. If we take the requirements as being roughly: HiDPI screen, thin and light all metal body, USB C charging, tenkeyless keyboard with centered trackpad and reasonable expectation of mostly working out of the box with a standard Ubuntu iso.
Your options are pretty much just the Dell XPS/Precision line and the Lenovo X1 Extreme series? Anything else?