The cast members from the "classic era" (i.e. 1995-2000) are on the right side as opposed to the most recent cast members (i.e. 2001-present):
Jamie Spears VS Amanda Bynes

Chelsea Brummet VS Alisa Reyes

Shane Lyons VS Danny Tamberelli

Jack De Sena VS Josh Server

Christina Kirkman VS Katrina Johnson

Ryan Coleman VS Kel Mitchell

Kyle Sullivan VS Lori Beth Denberg

Giovonnie Samuels VS Angelique Bates

Lisa Foiles VS Christy Knowlings

Bryan Hearne VS Kenan Thompson

Jamie Spears (look-wise)

Chelsea Brummet (again, look-wise)

Danny Tamberelli (wasn't a big Danny fan but still....)

Josh Server

Katrina Johnson

Kel Mitchell

Lori Beth Denberg

Angelique Bates

Christy Knowlings

Kenan Thompson

Where's Nick Cannon? Leon Frierson?

And where's Mark Saul? Gabriel Iglesias?