Well i've done 15 nuzlocks i won in 5 and here they are from best to worst
5 INSURGENCE Delta Venusaur , Crobat ,vileplume
4 White 2 randomizer Hydreigon,Victini, Slowking,Gardevoir,Clampearl
3 Emralde Randomizer Rayquaza,Huntail,Vileplume(again),Flygon
2 Platinum Randomizer Staraptor,Giratina,(Cinthia fucked me up)
1 Blaze Black Emboar(I hate this thing but it was helpful), azumaril,weavile,Shedinja,Charizard,Hydreigon
Yeah so those we're my wins but the first nuzlock i ever did was of ruby and i lost because i picked regice and he only knew explosion