How many people know the result?

When plans are laid out for a match, how many people will know the result? Obviously Vince, creative, the wrestlers in the match and the ref will know but what about everyone else? Will the rest of the roster know? Is it kept to a minimum so there is less chance of it getting leaked? Does it depend on the importance of the match?

One example I can think of is the Royal Rumble Match in 2008. Apparently only Triple H knew that Cena was returning and winning and everyone else thought H was winning. Is this one true?

What other examples do you have?

Cena wasnt officially cleared to return until the morning of the 08 Rumble, the initial plan was for Jeff Hardy to beat Randy Orton for the WWE Title but Cena's return put that on ice...Stephanie pulled the plug on the Title change on the morning of the event due to knowing Cena was returning, I'd say Vince obviously did, the commentators would have been told via the Gorilla position after he made his return

Commentators are usually the main guys who know what's going to happen as they need to put over who needs to be put over and they need to sell moves/angles the correct way too, some commentators preferred not knowing, Bobby Heenan and Jerry Lawler were in this bracket although both where just cilours and not Play by Plays...since Lawler turned face though he was under instruction to know as much detail as possible as he became more than just an antagonist