I have a Gigabyte motherboard, and the only issue I've run into—even with Arch—is this specific B550 board uses some third-party sensors, and the necessary it87 module doesn't load and isn't included by default. This makes it impossible to utilize tools like CoolerControl to manage fan curves.
Thankfully, some kind soul manages a DKMS module via the AUR, in spite of both Gigabyte and the IC manufacturers being less than helpful.