Apparently this thread is too old to be editable. Updated to include Durant.
Since someone always asks, these are high-drafted players who, at some point, were on the Suns. They are not (most of them) players that the Suns drafted. That would be a different list.
#1 overall
Joe Barry Carroll (drafted 1980)
Danny Manning (1988)
Shaquille O'Neal (1992)
Deandre Ayton (2018)
#2 overall
Neal Walk (1969)
Wayman Tisdale (1985)
Armon Gilliam (1987)
Jason Kidd (1994)
Antonio McDyess (1995)
Stromile Swift (2000)
Tyson Chandler (2001)
Kevin Durant (2007)
Michael Beasley (2008)
#3 overall
Clem Haskins (1967)
Rick Robey (1978)
Penny Hardaway (1993)
Grant Hill (1994)
#4 overall
Corky Calhoun (1972)
John Shumate (1974)
Alvan Adams (1975)
Xavier McDaniel (1985)
Dennis Scott (1990)
Jim Jackson (1992)
Stephon Marbury (1996)
Chris Paul (2005)
Wesley Johnson (2010)
Dragan Bender (2016)
Josh Jackson (2017)
#5 overall
Walter Davis (1977)
Charles Barkley (1984)
Vince Carter (1998)
Jason Richardson (2001)
Nikoloz Tskitishvili (2002)
Ricky Rubio (2009)
Alex Len (2013)