Sarah Ferguson
Fergie
She has no limit as far as promotion to the new King, her ex-BIL, Charles.
Though divorced, she lives with her ex, Prince Andrew, and they're both about to be evicted from the Royal Lodge and sent to Frogmere. And she's throwing everything she can to stop it, if not, then to postpone the inevitable.
Comments about how the Queen trusted her so much that Fergie was willed the caretaking of the Queen's dogs. And how she "feels the Queen's presence" with the dogs. How close she was to Prince Philip. How honorable a man Andrew is and she'll be loyal to him forever. She can support him if necessary. What a great King Charles will be.
Bullshit. Her gravy train is about to go off the tracks. Andrew's allowance has been cut off; they're about to be evicted; and she has no standing in the royal network whatsoever, save for her daughters. Fergie can't budget money. It's a matter of time.
Appeals to Charles and/or Camilla are futile. Fergie can threaten to "tell secrets," but right now, she and Andrew are just above Harry and Meghan as far as popularity goes in the royal household.