Jeff Dooley of profootballfocus.com recently came out with a list of the Top 10 Running QBs in College Football.  The way he went about it made some sense:

At PFF we break down our player grades into different aspects of the game, allowing us to see, for example, which quarterbacks were most productive from a rushing standpoint.

Using those grades, along with total yardage, yards per carry, yards per contact and forced missed tackles, we have ranked the best running quarterbacks in college football entering the 2016 season.

JT Barrett came in 2nd.  Oklahoma's QB is listed 9th, by the way.  The first QB on the list may not be who you'd think it'd be. 

Might be worth a quick look -