I believe if the 3p line existed Aiken's junior year, he would have been north of 45%. Like you said, he *slumped* his senior year, and shot 39% from three.Ramon's numbers are superior to Maile, and Aiken in his single year (shot 39% from three as a senior but really started to struggle as the year went on).
I watched Clyde very much during his days at Pitt and while he could hit deep shots, he also missed lots of deep shots too.
But as I mentioned in my reply, I can't comment on Harris and Billy Knight. And I also have a hard time judging how good three point shooters would have been prior to the three point line. It's not quite apples to apples.
My eyeballs in 1986 saw a 45%+ three-point shooter in Aiken.