No look at 'quality' here, just 'quantity' of wins, limiting the analysis to Grade 1 wins at 6f to 14f since 01-Jan-1990. (This keeps out the Steeplechasers.)
In the following list, I've only included those with 5 or more Grade 1 Wins, and show their 'gender', too.
Name # of G1 Ws Gender
ZENYATTA 13 Female
AZERI 11 Female
CIGAR 11 Male
SERENA'S SONG 11 Female
WISE DAN 11 Male
PASEANA 10 Female
SKIP AWAY 10 Male
GAME ON DUDE 8 Male
HEAVENLY PRIZE 8 Female
SKY BEAUTY 8 Female
ASHADO 7 Female
FLAWLESSLY 7 Female
GIO PONTI 7 Male
LAVA MAN 7 Male
SHARP CAT 7 Female
SIGHTSEEK 7 Female
ACCLAMATION 6 Male
BEAUTIFUL PLEASURE 6 Female
BEHOLDER 6 Female
BEST PAL 6 Male
BLIND LUCK 6 Female
CURLIN 6 Male
ENGLISH CHANNEL 6 Male
GINGER PUNCH 6 Female
GO FOR WAND 6 Female
HOLY BULL 6 Male
INSIDE INFORMATION 6 Female
POINT GIVEN 6 Male
POSSIBLY PERFECT 6 Male
ROYAL DELTA 6 Female
AMERICAN PHAROAH 5 Male
BANSHEE BREEZE 5 Female
BETTER TALK NOW 5 Male
CLOSE HATCHES 5 Female
CONGAREE 5 Male
COURT VISION 5 Male
DEVIL HIS DUE 5 Male
EINSTEIN 5 Male
INDIAN BLESSING 5 Female
INVASOR 5 Male
KOTASHAAN 5 Male
LEMON DROP KID 5 Male
LOOKIN AT LUCKY 5 Male
MEADOW STAR 5 Female
MUSIC NOTE 5 Female
POINT OF ENTRY 5 Male
RACHEL ALEXANDRA 5 Female
REAL QUIET 5 Male
RIBOLETTA 5 Female
SANDPIT 5 Male
SHARED BELIEF 5 Male
SILVERBULLETDAY 5 Female
STARDOM BOUND 5 Female
TWICE THE VICE 5 Female
UNTAPABLE 5 Female
WITH ANTICIPATION 5 Male
YOU 5 Female
Beyond American Pharoah, Untapable is still active ... maybe Wise Dan, too. Not sure about Point of Entry.