I’ve heard great things about system76, never had one of their laptops myself but still have the desktop I got in 2011 (Wild Dog Pro). I personally use the frame.work 13, and it has been working great with Arch installed. I do not recommend Arch, use something like PopOS, or LinuxMint.
The official name is “The Moon”, Luna just means moon in Latin. It’s all about capitalization. Moon is our moon, and moon is any moon.