Known Facts:

1. Thanks to the sneak peak by IGN, we know that Panda King is still in China keeping a eye or two on boys for Jin King.
2. From the intro movie to the game, Penopole had vanished with out a trace from Bentley's lab — mostly a side effect of what's going on with Cooper Clan's time problem.
3. From a clip from the game spotten in the IGN's sneak peak, Dimitri, is holding down the fort in present day.
4. The first level is Riccohi Cooper's period as know from the Game Trailer's preview
5. Also from Game Trailers's preview The second level is Tennessee Kid Cooper's time period.
6. Four of the twelve slot are contained Sly, Bentley, Murray and Carmelita — leaving eight empty spots.
7. We know from IGN's sneak peak, that Sly's dad's time period isn't going to be visited by the Cooper Clan.

Here's my view going in the United States of American's reading order — left to right.

My Guesses

1. Sly
2. Bentley
3. Murray
4. Carmelita
5. Riccochi (Since he's is the first ancestor's time period we visit)
6. "Tennessee Kid" Cooper (Second ancestor's time period we going to vist)
7. Sir Galleth
8. Salim Al Kupar
9. Henriette Cooper (for a water stage)
10 Slaigh Cooper (for a snow/ice stage.)
11 Otto Van Cooper
12 Slythankhum (why not end the time travel with the the raccoon that started it all?)