Well, I will not argue with Hayne, he is the closest.
Jarryd is his only true rival @ rep level.
I would argue Greg is the standout at rep level over the 8 years, and he can take a team from close to true contender.
The fact Jarryd or Greg can play anywhere from 1-6 and still be the best player in the team does make them stand above the others you mention. Maybe not to you, but does to me
Slater is over rated, very good player, but has many limitations.
Thurston is a great halfback, but lack of premierships holds him back, it is not like the rest of team is crap, he has had the two Aussie front rowers.
Smith, best hooker of his generation.
It is not an argument, it is my opinion, feel free to disagree.