As Max Jr said, it's only three guys in Iowa and two in Minn who aren't picking one of those four schools:
Iowa: #6, #15 going to Iowa State and #10 going to K-State (coach is from NDSU and previously was a big Northern Iowa guy)
Minn: #2 Joe Alt going to Notre Dame and #7 Bastian Swinney going to Cal . There is also #9 Tyler Magnuson (Wayzata OT) going to Syracuse.
(IMO, neither Alt nor Mahlman at Wisc will ever be starters. Yeah I'm bitter guy for saying that, and yeah you gotta follow your dreams, but I still think they were stupid decisions, even if they didn't come to the U instead)