I can personally recommend the "Tuxedo Infinity Book 14 Pro" maxed out on options with Linux/Windows Dual Boot preinstalled. AMD and Intel are offered both (personally I would choose Intel, because it comes with Thunderbolt 4). Also: up to 96GB RAM and PCIe4 SSDs.

Instead of Dual Boot they also offer a preinstalled VM with a licensed Windows. Tuxedo OS Linux is a slightly modified Ubuntu optimized for their Hardware.