It occurs to me: generations in the future, people will wonder if Donald Trump actually existed. They will assume he's a folkloric character, like King Arthur, Robin Hood, the Yellow Emperor, or Jesus of Nazareth.
He's clearly an allegory; the personification of greed and late-stage capitalism (symbolically represented by his diet, personal habits, amorality, and accounts of failed business ventures), used as a short-hand for how those forces can undermine and destroy a society from within. His position as American president reflects how the qualities he embodied eventually came to be primarily associated with American-style consumerism and imperialism --Trump represents the ultimate possible evolution of the idea of "Manifest Destiny." Even his name is derived from a term dating back to the 16th century for card games, frequently used for gambling.
While he may have been based on a historical figure, it's impossible to determine the truth due to how many records of the era were falsified or erased outright during the AI crisis of the mid-21st century.