Whew! Obi-Wan clearly knew who Syfo-Dyas was, even by reputation, so I think it would be difficult for him to be Qui-Gon, Maul or Windu. He also could not be Palpatine because he would be recognized and Palpy must have had a normal life on Naboo (or nearby) to rise to the rank of Senator. What confuses me a little is that the Prime Minister of Kamino said the clone army was ordered by Syfo-Dyas, yet Jango said he'd never heard of him. You would think that in his ten years on Kamino he and the PM would have had dinner once or twice and discussed it. But I'm not sure why Jango would lie to Obi-Wan. Why mention Tyrannus? Why give Obi-Wan another name that might mean something to Yoda or Windu. In fact, I don't remember Obi-Wan telling them about Tyrannus in his transmission, which is also strange. I also wondered that if Dooku did order the clone army why he was suprised to see them show up on Geonosis. Wouldn't Jango have told him that Obi-Wan Kenobi had shown up on Kamino, and thus the Jedi Council now know about the clone army? There's obviously a lot of deception going on.