Tough to rank in actual order across eras, I just thought of 12ish that I'd have above the rest..
Tier 1: Magic(obvious)
Tier 2: Curry(by far the most feared individual PG and had the greatest season ever for a PG in 2015-16)
Tier 3: Paul, Stockton, Nash(Nash is the clear 3rd here since you could argue that his system benefited him greatly)
Tier 4: Kidd, Payton, Westbrook(all 3 are somewhat overrated)
Tier 5: Thomas, Parker, Billups(Thomas is the most overrated PG of the modern era, while both Parker and Billups are underrated)
It's tough with TP, because he has outplayed guys like Paul and Nash in series' but he doesn't have the individual accolades to compare resumes..