According to Texas Monthly they are:
Steve Ogden
Jim Pitts
Rick Perry
Jay Kimbrough
Dave Carney
Bill Hammond
Dick Trabulsi
Brooke Rollins
Scott McCown
Dan Patrick
Michael Quinn Sullivan
Tom Suehs
Bob Perry
Steve Mostyn
Al Armendariz
Alonzo Cantu
Bill Powers
Woody Hunt
Charles Butt
Pat Robbins
Mike Toomey
Rusty Kelley
Buddy Jones
Bill Miller
Brint Ryan