Whole disk encryption on macOS requires HID devices to be able to connect before most of the system has booted up. Logitech support recommends turning off FileVault (!!) or not to use Bluetooth (their HIDs come with an alternative dongle so that the OS doesn't have to deal with the wireless collection).
My question is: Does Apple even offer a way for 3rd party manufacturers to build FileVault compatible Bluetooth HIDs? And if so, is there a list of compatible non-Apple devices?