A partial list of players not selected in the NBA draft -
Oscar Tshiebwe, UK
Adama Sanogo, UConn
Drew Timme, Gonzaga
Jacob Toppin, UK
Terquavion Smith, NC St
Charles Bediako, Alabama
Mike Miles Jr., TCU
Ricky Council IV, Arkansas
Azuolas Tubelis, Arizona
Adam Flagler, Baylor
Tshiebwe was the 2022 college POY. Timme was a three time All-American. Sanogo was the MVP of this year's NCAA tournament.
The common link - those three guys were all strong, capable low post guys with limited versatility. Tshiebwe didn't hit a three all season and had low assist totals and a negative assist to turnover ratio. About 50% fewer blocked shots than Slawson. Timme had decent assist numbers but only hit about 17% of his threes and poorer steals and blocked shot numbers than Slawson. Sanogo hit 36% of his threes this year but only made 19 in 39 games. His blocked shots, assists, and steals numbers and a/to ratio also weren't good, either.
Not easy to get drafted.