It does seem ( respected mystic culture ) (position in royalty) is the most reincarnated type of spirit.
Nobody is the reincarnated Somalian goat herder or the guy that shoveled horse manure off London streets in 1823.
Madame Woo is expert at playing vanity into a bit of easy money.
Sh. In my experience it is always some fabled figure. Rasputin crops up repeatedly. In fact, I had two friends who claimed that a psychic told them they were the reincarnation of Rasputin. I pointed out that they could not both be and it turned out to be the same psychic who told them this, separately.
Faced with this unexpected turn of events, I laughed and they retired muttering darkly. Did it change their crank beliefs? Not even slightly dented them. It's all rather depressing to see people you are fond of get suckered this way. But so it goes.
Other favourites? Cleopatra, Ceasar, Mark Anthony, Napolean, Hitler, the list is endless. Yet always famous/notorious people.
This of course became unsustainable after we got to 50 Cleopatras all extant simultaneously, so there was a weird migration to holy anons, a holy monk of a secretive order, for example, or other such august figure. That became the rage for a while because when asked or challenged for evidence well, there was none at all because they were holy, secretive and anonymous therefore there would be no evidence. I have no clue what "guru" came up with that gem.
And then the whole thing seemed to fade away. After all it is difficult to argue that 50 people are all Cleopatra's avatars at the same time.
Nevertheless, it never died a proper crank notion death. Here it is back again, only now there are whole scads of new celebs or otherwise noted dead folk to add to the mix.
It's a big mad fringe reset sandwich and we all have to take a bite.
Sad as it is. We wont nuke ourselves, or starve for lack of the resources we used up already.
We will simply "stupid" ourselves into extinction while patting ourselves on the back for such a fine job.