Doesn’t hold a candle to William Jennings Bryan.
No.
But seriously, not many, if any actually, are alive today that would have experienced him. So I would have to use Ronald Reagan, and no he isn't as gifted a speaker as Regan was. However, he is quite compelling in his own right, as is evidenced by the support he has garnered.
Do you mean the The Cowardly Lion? I agree that the contest between Trump and the GOPe and Hillary Clinton has many interesting parallels with McKinley vs. Bryan, with the exception that, unlike the Cowardly Lion, The Donald can bite, and will bite hard.