5) Dave Kleiman?

More info here: https://en.wikipedia.org/wiki/Dave_Kleiman The Strange Life and Death of Dave Kleiman, A Computer Genius Linked to Bitcoin's Origins - https://gizmodo.com/the-strange-life-and-death-of-dave-kleiman-a-computer-1747092460

3) Could Nick Szabo be the real Satoshi Nakamoto?

Wikipedia about the man:https://en.wikipedia.org/wiki/Nick_Szabo If you would like to dig a little deeper, have a look at the first answer on this Quora enquiry:https://www.quora.com/Is-Satoshi-Nakamoto-now-with-about-1B-in-Bitcoins-really-Nick-Szabo More thoughts on this matter: https://likeinamirror.wordpress.com/2013/12/01/satoshi-nakamoto-is-probably-nick-szabo/