It's also such an extreme bar. Iowa has 5. Even if they were all there at the same time, that's probably 2-3 more players, at most, than any other great team. On a roster of 100. So Iowa could have had the most elite NFL talent, without having the most NFL talent, or even most top end college talent.
Plus...
Wirfs - 17-19
Linderbaum - 18-21
Kittle - 12-16
DeJean - 21-23
Campbell - 19-22
So, they only overlapped in 2018 (2), 2019 (3), 2020 (2), 2021 (3), and 2022 (2)
And in some of those years, you are counting on first and second year players. The only year they had multiple of those as upperclassmen, was 2021, with a junior Jack Campbell and a senior Tyler Linderbaum. And FWIW, that team did make it the the CCG. How it went, once they got there...