Nobody is using Nash in this league ($55 mil cap), if that tells you anything. There are 10 teams with winning records: 4 have Stockton, 2 have Kidd, 2 have CP3, 1 has Magic, and 1 has Penny Hardaway.
08-09 CP3 is probably the answer to your question: high ast%, good usg%, decent boards, 90 def, and good efg%. CP3 in general gives you these good numbers across the board. In addition, 94-95 and 95-96 seasons of Penny Hardaway have good efg%, good usg%, solid rebounding, good def, although they have subpar ast% for a PG.
If somebody with a bit more experience could give their thoughts it would be much appreciated.