Check 247 Sports for each of these teams. Wisconsin has had some very highly rated players (remember Sam Dekker?) and many Top 100 players.
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The "we don't need Top 100 players" is nonsense. Every memorable Illinois team has been loaded with really good players.
I looked at 247, at Wisconsin's recruiting classes from 2010 through 2018. That is 9 years. For classes prior to 2010, 247's rankings are badly skewed.
Anyway, for those 9 clsasses, Wisconsin signed exactly three top 100 players: Sam Dekker 12, Nathan Reuvers 66, Brevin Pritzl 94.
More recruits: Brad Davison 108, Bronson Koenig 110, Jarrod Uthoff 114, Nigel Hayes 137, Evan Anderson 139, Ethan Happ 152, Ben Brust 181, George Marshall 187, Kobe King 197, Josh Gasser 197, Duje Dukan 199, Traevon Jackson 223, Vitto Brown 227, Frank Kaminsky 242, Jordan Hill 353.
Other recruits were ranked 147, 203, 253, 292, 303, 319, 320, 333, 380, 383, NR