Don't forget a Slovenian ski-jumper. The rest of the world must be glad that other Slovenians didn't switch to road cycling.
Imagine if a serious Slovenian cyclocrosser ever decided to switch to the road.
We've already seen what happens if a Slovenian uni-cyclist decides to switch to the road...
As for the topic: two main guys (Sagan and Quintana) peaked early. In case of the latter it may be the opposite though (don't believe official age data).