Years ago it used to be that installing Linux on a laptop was a manufacturer unsupported thing that only hackers do. Nowadays, there are dozens of system manufacturers emerging that treat Linux as a first-class citzen and ship the machine pre-installed with a variety of LInux distros. Here is my list of Linux Laptops that I’m aware of.
Starlabs
11 inch Star Lite 
14 inch StarBook
A promising new contender into the linux hardware space
System76
Oryx Pro 
Serval WS
Custom laptops shipped with Pop_OS!
I bought a Bonobo WS in 2018 and I’ve enjoyed just about everything but the HiDPI display
Ministry of Freedom
libreboot x200 
libreboot x200 tablet
100% Free Software, including drivers (e.g. WiFi) and applications. Libreboot BIOS replacement and Trisquel GNU+Linux operating system pre-installed, endorsed by the Free Software Foundation. Profits fund Libreboot, lead by Leah Rowe who also operates Minifree. Other GNU+Linux distributions are also compatible.
Purism Librem
Linux notebook with an unmatched emphasis on personal privacy
PINE64
Pinebook 
Pinebook Pro
Budget friendly ARM laptops
Conclusion
This is an incomplete list of every current-gen linux laptop out there, but it’s a good start. I will be updating it as I learn of more laptop vendors in this space. Feel free to let me know of other vendors that belong on this list!
