What is every Big 12 Conference team's record against the over/under line as a home underdog since the 2015 season?

Definitions
Team Over Record Over % Under % Total +/-
Oklahoma 1-0-0 100.0% 0.0% +10.5
Texas Tech 15-7-1 68.2% 31.8% +10.8
Houston 8-5-1 61.5% 38.5% +4.3
TX Christian 7-5-0 58.3% 41.7% +4.2
W Virginia 9-7-0 56.3% 43.8% +4.5
Oklahoma St 7-6-0 53.9% 46.2% +1.9
Kansas 20-18-0 52.6% 47.4% -0.4
Kansas St 9-12-0 42.9% 57.1% +1.1
UCF 3-4-0 42.9% 57.1% +1.1
Iowa St 9-12-1 42.9% 57.1% -2.6
Cincinnati 5-8-0 38.5% 61.5% -6.5
Texas 4-7-0 36.4% 63.6% +0.5
BYU 5-9-0 35.7% 64.3% -2.8
Baylor 6-12-0 33.3% 66.7% -2.6