Luck and Heisman Trophy winner Griffin are expected to go 1-2 to Indianapolis and Washington, respectively.
The 26 players will be the most to attend a draft. In all, 16 schools will be represented.
The rest of the 26 prospects include: North Carolina defensive end Quinton Coples, South Carolina defensive end Melvin Ingram, Mississippi State defensive tackle Fletcher Cox, Stanford tight end Coby Fleener, Notre Dame wide receiver Michael Floyd, South Carolina cornerback Stephon Gilmore, Georgia offensive tackle Cordy Glenn, Texas A&M quarterback Ryan Tannehill, Boise State linebacker Shea McClellin, USC defensive end Nick Perry, Memphis defensive tackle Dontari Poe, Penn State defensive tackle Devon Still, Georgia Tech wide receiver Stephen Hill and Baylor wide receiver Kendall Wright.
Information from The Associated Press was used in this report.