RPI
1 Kansas (23-8) 0.668 1 69 1
2 Virginia (28-2) 0.662 2 241 3
3 Duke (26-5) 0.661 1 67 2
4 N Carolina (26-5) 0.656 4 70 4
5 Houston (29-2) 0.651 3 190 6
6 Kentucky (26-5) 0.647 6 133 7
7 Gonzaga (30-3) 0.646 2 207 5
8 Tennessee (26-4) 0.642 1 209 8
9 Michigan St (25-6) 0.637 3 142 10
10 LSU (26-5) 0.636 3 80 12
NET
1 1 Virginia ACC 28-2 10-1 3-0 15-1 0-0
2 2 Gonzaga WCC 30-3 9-1 4-2 17-0 0-0
3 3 Duke ACC 26-5 7-2 4-1 15-2 0-0
4 4 Houston AAC 29-2 10-1 0-0 19-1 0-0
5 5 Kentucky SEC 26-5 8-2 1-2 17-1 0-0
6 6 Tennessee SEC 27-4 7-3 2-1 17-0 1-0
7 7 North Carolina ACC 26-5 11-1 1-2 14-2 0-0
8 8 Michigan St. Big Ten 25-6 8-4 2-1 15-1 0-0
9 9 Texas Tech Big 12 26-5 6-3 3-1 17-1 0-0
10 10 Michigan Big Ten 26-5 7-4 2-0 17-1 0-0
While I do not know the 'secret formula' for NET, I do know that the metric includes some consideration for road versus home. Kansas (#1 in RPI) has been horrible on the road (though undefeated home and neutral) in comparison to other teams, so other teams' performance in their road games probably causes Kansas to be substantially lower.
https://twitter.com/marchmadness/status/1067063960753573889?s=20