Okafor was 99 in the final consensus rankings, but only after playing well in a senior year all star game in April. He was outside the top 100 in the whole process until then.
Voskuhl, Boone, Austrie, Okwandu, Edwards, Giffey, Brimah, Kromah and Nolan have all been key contributors on Final Four teams from outside the top 100, if not 10 pig scorers. But if you went back to 1990, which is a more fair comparison to where the football program is in its stage of development (10 years into the Big East vs 10 years into FBS), Smith was the only top 100 guy on the team. And even that parallel isn't fair, since hoops was in the top conference in the country around then, and football is outside the BCS.