Terry Brands was much more accomplished than Kolat; both in college and internationally.
I like Kolat, don't get me wrong, but there is a lot of projection on what he would have done if he didn't get some raw deals. Sometimes you just need to make your own breaks. (and yes, he did get saw raw deals) The fact remains that Terry won two WCs and Kolat won zero and made one final, where a guy kept untying his own shoes to get a breather. Be more dominant, and you don't have to worry about shenanigans.
1999 worlds, he took two losses. One may have been a re-wrestled match, but both weren't. Did not medal.
In the 2000 Olympics, he lost to Talaei (IRI) (re-wrestled match or re-scored?). The Iranian did not medal.
But the US answer is probably Lee Kemp. Chris Campbell was looking pretty solid around that time, too... just not the accolades of Kemp.