According to data provided by the Bangladesh-based news outlet The Business Standard, King Maha Vajiralongkorn of Thailand is the wealthiest among the world's richest monarchs.

They come from lengthy lines of succession that rule over the economies and societies of entire countries; they are the original elite and rich. Furthermore, the world's remaining monarchs continue to have abundant access to real estate, business holdings, stock ownership, and money itself, even in a world of demo...