I have no idea which of these services is the most respected or likely to be the most accurate, but here are the results of the first 7 mock NBA draft sites listed with a Google search...
nbadraft no Iowa State players in first two rounds
cbssports Talen Horton-Tucker (1st round, #22)
espn Talen Horton-Tucker (1st round, #18), Marial Shayok (#100)
nbcsports no Iowa State players in first round
tankathon Talen Horton-Tucker (1st round, #27)
sportingnews Talen Horton-Tucker (1st round, #24)
bleacherreport no Iowa State players in first round
Looks like Talen Horton-Tucker has a chance to be maybe a late 1st round pick. Nobody else showing up on the radar.
nbadraft no Iowa State players in first two rounds
cbssports Talen Horton-Tucker (1st round, #22)
espn Talen Horton-Tucker (1st round, #18), Marial Shayok (#100)
nbcsports no Iowa State players in first round
tankathon Talen Horton-Tucker (1st round, #27)
sportingnews Talen Horton-Tucker (1st round, #24)
bleacherreport no Iowa State players in first round
Looks like Talen Horton-Tucker has a chance to be maybe a late 1st round pick. Nobody else showing up on the radar.