Google Pixels generally have the best support for alternate OSes, especially from a security POV. See CalyxOS and GrapheneOS, which primarily/only support Pixel

Google Pixels generally have the best support for alternate OSes, especially from a security POV. See CalyxOS and GrapheneOS, which primarily/only support Pixels thanks to their ability to re-lock the bootloader. I doubt third party Android distributions pose any real threat to Google given that 99% of people will stick to the default.