Can they get anonymous past the FL?
Insofar as they may wish to be anonymous in public but must declare to the authorities? Leeds seem to have anonymous backers during the Bates era, that even the redoubtable David Conn couldn't unveil.
Yes that's precisely what Bates did - the directors etc were declared privately to the FL (or at least that's what they claimed but of course with no scrutiny of that, who knows?) for the purposes of FPP test, but kept secret in public. Where there's no transparency, there's always going to be a stench of skullduggery.