From those already named, those who strike me the most as possible STO candidates are: Trump, Putin, Lavrov, Gabbard, RFK Jr., Tucker, Candice Owens, Jimmy Dore, Thomas Massie.
I’d add Viktor Orban. I don’t know a whole lot about him but from the interviews I’ve seen the President of Belarus, Lukashenko seems a possible candidate.
Maybe Kash Patel and JD Vance; we will see.