I don't know all of them, but some of them are:
Ruben, Kelly Clarkson, Carrie Underwood, Taylor Hicks, Jordan Sparks, Lee Dewyze, Kathryn McPhee (?), and I can't remember the rest.
Scotty McCreeryAmerican Idol 2011 was won by Scotty McCreery.
Kelly Clarkson won the first American idol
Kelly Clarkson won American Idol in season 1 , 2002 .
Kris Allen won American Idol in 2009.
American Idol
Candice Glover is the 2013 American Idol winner.
Scotty McCreery is seasons 10 American Idol.
The winner of American idol 2007 was Jordan Sparks.
Taylor Hicks .
Carrie Underwood
Kris Allen won American Idol 2009.
No one. American Idol did not debut until 2002.