Hard to argue with the first list, but a young Camacho would make my list. Imagine if he was more dedicated?
Co-ordination Timing Reflexes Speed Power Chin Lopez has those. Calzaghe certainly does. Both to a greater extent than Hopkins too. Lopez has those attributes and applied them into a text book style.
Hopkins relies on his intelligence and conditioning. Hopkins almost 100% fullfilled his potential (through hard-work and technique), Calzaghe about 50% of his potential, but Calzaghe beats him anyway. You cannot list the man who lost to Roy Jones so comfortably.
Calzaghe was a talented footballer. Hopkins was a criminal. Calzaghe has the universally transferable talent.
Their timing is equal and it is all Hopkins has to rely on. Calzaghe has a billion superior attributes relevant in boxing.
Imagine the following scenario... Hopkins, Lopez and Calzaghe are all mentally ******ed. Their capacity for learning is somewhat limited. Hopkins is the worst of the lot, by far.
'Smartness' is almost entirely based on environment, not genetics. You could in theory train just about any baby in the world up to be a genius. You cannot train them to have Joe Calzaghe muscluar composition and reflexes. You can train them a little, not to Calzaghe's level though.
Let me also make mention of Wladamir Klitshco. His natural speed, power, technique, etc are awesome for not only a man of his size, but simply in general. You would be hard pressed to find a HW with faster hands than Wladamir.... And no I am not a Klitshco fan.