Here is a list of transfers that finished their eligibility at ISU in the last 15 years:
Shayok, Weiler-Babb, Talley, Beverly, Brase, Burton, Bowie, Holden, Nader, McKay, Dejean-Jones, Kane, Clyburn, Lucious, Booker, Babb, Christopherson, Anderson, Thompson
Here is a list that did not finish their eligibility in Ames:
Kasongo, Cooke, White
So if this list is complete (and it may not be), that is 19 of 22 transfers did finish their time in Ames. One of the three that did not was drafted in the NBA.