CP is the number 1 PG for like a bunch of reasons, a few being his leadership on the floor, his assist to turnover ratio, and his basketball IQ. Lebron is probably the only player IMO that could even challenge him for the spot.
Number 2 would be probably Curry because he's such a gifted shooter, he opens up so many opportunities for his teammates because he demands so much defensive pressure.
Number 3 for me would probably be John Wall, when healthy he's just crazy good, bigger than most other PG's so he can disrupt on defense, and on offense, especially on the fastbreak, he's pretty much way faster than everyone else in the NBA.
4 is probably Russel Westbrook, probably the most physically gifted of all the point guards and has the best motor, but he sometimes forces the issue and i haven't really seen him play the PG position like a PG is that makes sense. Harden could also be number 4 even though he is listed as an SG.
5 is Conley Jr. He controls the tempo so well and his IQ for the game is excellent. (imo no one else is even close in the tempo regard besides CP) i think its because both PG's have 2 dominant big men, in the Grizzlies case, they have the best big man 1-2 punch in the league so that obviously helps a lot. Conley also plays lockdown D and has a good shot.
6-10 pretty much any order, they're all pretty close.
D Lil (clutch gene)
TP (rings)
Kyrie (best offensive PG in the game)
Rose (if he stays healthy he's top 5)
Lowry/Teague (both solid PG's)
I get why CP has haters and all, he's not the most likeable guy by any means, but i dont think theres any argument that can justify that he's not the number 1 PG in the league. he has been for several years.