Yeah, in the 40 years starting in 1968, Michigan finished outside of the top three in the conference I think 6 times. In the Harbaugh years, Michigan consistently finished in the top 15 in the country, and was always a very tough game for any Big Ten opponent. Honestly, they are a tough game this year, too, they just don't score many points.
Michigan against the Conference since 1968 (omitting the Pac schools)
Illinois: beat Michigan in their last game in 2024, but prior to that its last wins were in 2008-2009 (the dark years in Ann Arbor), and Illinois has beaten Michigan seven times.
Indiana: notwithstanding Indiana's recent success, other than its last two games against Michigan, Indiana has won two games: one was the Covid season, one was 1987.
Iowa: relatively competitive with Michigan (Iowa has been good under Frye and Ferentz): Michigan is 28-13.
Michigan State: The DAntonio/RichRod-Hoke years were good for Sparty, and Michigan's record is still 39-19.
Minnesota: five wins against Michigan, scattered roughly one every ten years.
Northwestern: the Cats last beat Michigan in 2008, and have four wins in this time.
Penn State: a college football blue blood when it joined the conference, since 1993 Michigan is 18-10 (with four in a row for PSU during the RichRod-Hoke era 2008-2013).
Purdue last beat Michigan in 2009, and has beaten Michigan seven times.
Wisconsin: Third in conference championships since 1993, still a loser to Michigan: 32-10 (12-9 in the post-'93 era, which includes Wisconsin's best-ever stretch, and Michigan's RichRod-Hoke era).
Maryland and Rutgers? Who cares. Regardless each has one win during the Brady Hoke era.
So that leaves Ohio State, the only winner, 32-24, I think. Dominant in this century (except '21-'24), as the Buckeyes have been against almost everyone.
So yeah, a juggernaut in the Big Ten.