I was thinking about Yianni as second best ever so mainly putting his titles up against Dake and Stieber. You are correct and it is fair to compare him to Spencer. I would consider Spencer to have the more impressive NCAA career because of his bonus rate but can see how a person would pick Yianni.
Dake's titles are over - Montell Marion (2x finalist), Frank Molinaro (NCAA Champ, 2x finalist, 4x AA), Derek St. John (NCAA Champ, 2x Finalist, 4x AA), DT (2x Champ, 4x finalist)
Stieber's titles are over - Jordan Oliver (2x Champ, 3x finalist, 4x AA), Tony Ramos (NCAA Champ, 2x finalist, 3x AA), Devin Carter (NCAA Finalist, 3x AA), Mitchell Port (2x finalist, 3x AA)