Which is precisely the reason it is not there. There are very few, if no monarch currently which has this -- except perhaps the King of Thailand, the Emperor of Japan. the Archduke of luxembourg and the Archduke of Leichtenstein and to some extent the Queen of England (but not Charles...), the King of Belgium. The royalty of Scandanavia or the Netherlands does not have it, the Spanish monarchy to some extent has it as does the Prince of Monaco
Yes. But just like sex education today teaches that marriage is a sex partnership in a shared household, so people of 19-20cc. have been taught that monarchy is about either dictatorship or decoration, but never a familial national bond. Pretty soon wives and husbands won’t be anywhere if we look for them, too.