The Ohio State University has over 400 linebackers in the NFL, some of which also start as QBs because they are considered too valuable to play just LB.
Oklahoma
ohio state
noter dame
Alabama
U of m
Purdue
Miami
Auburn University
Yes linebackers can be short, but most linebackers in the NFL are 5'11-6'2....but that doesnt mean that you have to be tall sometimes being short is an advantage in the linebacker positions.
Penn state
penn state
The Washington Huskies by far 25.