Though isn't Jordan supposed to be closer to a constitutional monarchy than the Gulf states?
It is but it still has a much more politically active, powerful, and (thus?) corrupt royal family than we find with constitutional monarchies in the West.
I am skeptical that the hereditary quasi-dictators of Jordan are particularly more corrupt than the hereditary quasi-dictators of, for example, the United Kingdom. The difference would more appear to be that the UK has been politically
stable, and the corruption is normalized and seen as legitimate. But I don't think that necessarily equate with less corrupt.
Revealed: police barred from searching Queen's estates for looted artefactsPolice have been barred from searching the Queen’s private estates for stolen or looted artefacts after ministers granted her a personal exemption from a law that protects the world’s cultural property, the Guardian can reveal.
Buckingham Palace and the government are refusing to say why it was deemed necessary in 2017 to give the Queen an exemption that prevents police from searching Balmoral and Sandringham.
10 rules and laws that the royal family is allowed to breakThe Queen can't be arrested or be the subject of civil and criminal proceedings, meaning she is effectively exempt from the law.
Though the Queen is not legally required to pay taxes, she makes voluntary payments on income, assets, and gains not used for official purposes, according to a previous article by Business Insider.
Other parts of the royal family's income, like the Prince of Wales' income from the Duchy of Cornwall, are also exempt from taxes, however, again, he "voluntarily pays income tax on all revenue from the estate," according to his website.
For instance, the public of the United Kingdom is prevented from accessing detailed information on how the royal household spends public funds and to what extent the royal family has attempted to influence government policies.
https://www.harpersbazaar.com/celebrity/latest/a23379222/meghan-markle-net-worth-prince-harry-kate-middleton-prince-william-compared/When it comes to the royal family, money isn't in short supply. In fact, Forbes estimated in 2017 the family as a whole is worth $88 billion, and in 2019 reported that the queen's net worth alone was estimated at $500 million.