On ESPN or ESPN2, ND's the third most shown team behind

Tennessee and South Carolina who both have 8 showings, while ND has 7 appearances. U Conn is the only other one with more than 4 at 6. Only 4 schools have 4: Baylor, Mississippi State, Oregon (the only Pac12 school with more than 1), and USF! (two of their games against UConn). The teams with 3 are: Texas (the only other Big12 school with more than 1),
Louisville, Missouri, and Big 10 schools Maryland, Iowa, and Michigan State. Nine other schools are seen twice (4 from the ACC, 2 from the SEC, 2 from the AAC, and1 from the Big 10).

My counting may not be perfect but it gives us an idea of popularity of the different schools.