According to NBA Draft room, PG Jaylen Suggs is the #4 pick, and Cory Kispert is the #15 pick. Joel Ayayi is a 2nd round pick. Other mocks have Suggs going higher, and have Drew Timme going in the 2nd round. The thing is with Gonzaga is they are talented (but far from the most talented team in NCAA history), but outside of Suggs, they are very experienced. These days, teams are either super-talented (KY or Duke) or super-experienced, but lack the high-end talent.
Gonzaga has both.
FWIW, the top 4 picks according to NBA draft room are:
1. Cunningham OK State
2. Jalen Green (the highest rated player ever to go straight to the G League: averaged 18 ppg in the G League; got better as the season went on)
3. Evan Mobley USC (didn't help himself last night, but has played well in the tourney)
4. Jaylen Suggs, Gonzaga