Before this season started, there was a clear hierarchy among point guards in the NBA.
The top three were Russell Westbrook, Chris Paul and Stephen Curry (note: this was before Houston Rockets star James Harden transitioned to the one.) Those three could each represent a completely different style of play at that spot, and could be organized in any way with little argument.
After that was a mix of four other point guards who were similarly difficult to rank. These were the likes of John Wall, Kyrie Irving, Kyle Lowry and Damian Lillard.