Andorid The really greatest thing imaginable would be a GrapheneOS Linux distribution
GrapheneOS is Linux, of course if you mean a GrapheneOS with Systemd + GNU + KDE/Gnome + etc etc then No, you will likely never see one for the desktop marketplace because
1) The Desktop Hardware is extremely variable and insecure(and even some of the Security hardware features aren't implemented correctly by the manufacturers)
2) The GNU/Linux ecosystem itself is extremely insecure and needs a lot of hardening to get it to a decent level. and even with that work an OS Like SecureBlue is still incredibly behind that of MacOS and Windows.