VIDEO : Who Is the Villain In The New Joker Origin Movie?

Who is the villain of the upcoming Joker origin movie?
According to Screen Rant, it might be Rupert Thorne, a mobster in the DC Batman universe.
The film is set in the '80s during the Clown Prince of Crime's early days as a failed comedian.
There is speculation that Robert De Niro is circling the role.
The role is described as "New York City businessman, rumored to be running for Mayor."
The as-yet-unnamed bad guy is "a symbol of wealth" in the city and is "deeply tan" with dark black hair.