What is every Big 12 Conference team's record against the over/under line as an underdog since the 2018 season?

Definitions
Team Over Record Over % Under % Total +/-
Oklahoma 5-2-0 71.4% 28.6% +3.3
TX Christian 18-9-0 66.7% 33.3% +5.0
Kansas 34-19-1 64.2% 35.9% +6.0
Houston 19-11-1 63.3% 36.7% +3.7
Texas Tech 23-17-1 57.5% 42.5% +3.1
UCF 7-6-0 53.9% 46.2% +3.1
Kansas St 18-17-1 51.4% 48.6% +0.9
BYU 13-14-0 48.2% 51.9% +1.0
Texas 8-12-0 40.0% 60.0% +0.3
Baylor 16-25-0 39.0% 61.0% -1.6
W Virginia 14-22-1 38.9% 61.1% -2.3
Oklahoma St 10-17-0 37.0% 63.0% +0.6
Cincinnati 7-16-0 30.4% 69.6% -6.4
Iowa St 7-19-0 26.9% 73.1% -3.2