One year starters in college.
Kyler Murray
Cam Newton
Mark Sanchez
Mitch Trubisky
Dwayne Haskins
I am sure there are others.
Not all did great, but most had or have a decent career and not a total bust.
Ryan Tannenhill had a little over 1 year playing in college.
Kurt Warner, started 1 year at Northern Iowa. And if not for an injury to Trent Green would nat have ever had any success.
Matt Cassell never started a game in college.
Some with a little more experience in college but weren't great QB's at the time.
Tom Brady was mediocre in college, and went until the 6th round.
Brett Favre was a mediocre college QB as well
Phil Simms, Brad Johnson