You are using undergraduate metrics. The B1G uses graduate/research metrics. By that standard, Louisville is non-existent and Oklahoma is close to Nebraska (legacy AAU evicted), Kansas (legacy AAU), and UConn.
If Oklahoma's academics count against it for B1G membership, then UConn's will count against us.
And if the B1G is going to be selective academically, they are limited to Texas from the B12, Colorado from the Pac12, or UNC and Virginia when the ACC agreements finally expire. Not clear that any of those are or will be available. Whereas Kansas, Oklahoma, and UConn are there to be had.