If all you are going to do is look at what wrestlers did after their High School careers, then you are leaving out a great deal of people who dominated their weight class during their HS era.
One name you need to include then is Jim Whitmer.
JIM WHITMER (Wrestling — 1963-67)
Wrestled for Hall of Fame coach Steve Gabriel at App State and was a two-time NAIA All-American at 137 pounds … Placed sixth nationally at 137 pounds in 1966 and fourth nationally at 137 pounds in 1967 … The Goldsboro, N.C., native had an unbeaten record during the 1966 team's run to a 9-0 record that included wins against NC State, North Carolina and Georgia Tech ... Was a senior on an 8-1-1 team in 1967 … Is one of three two-time wrestling All-Americans from App State along with Bruce Schlegal (three-time) and Mark Fee … App State had two unbeaten seasons while going a combined 32-3-1 in his four years at Appalachian State … Majored in Biology and attended graduate school at Appalachian State … Founded the wrestling program at Enka High School in 1970 and was inducted into the National Wrestling Hall of Fame in Oklahoma in 2008 thanks to a 351-80 record as a coach … Received the Laurel Wreath Award, North Carolina's highest honor for athletic achievement, in 2018.