Outta all the Rappers mentioned as greats Jay Z lacks the most Substance for over 10 Albums he has pretty much Rapped about mostly clishe topics like selling drugs, money and materalisim on ever album from Reasonable Doubt to Blueprint 3. He also lacks emotion and the ability to move the listeners with his Music that good Rappers are known for.
The thing with Jay Z also is if you heard 1 Song of his you pretty much heard them all that is how 1 dimensional he is in Subject Matter and style.
He also is known to use Singers on majority of his Songs who do the Hooks for him he never been a Rapper that had the ability to craft Hooks it's quite easy to pay a famous Singer to feature and record Hooks for your Songs where as good Artists at times can craft their own Hooks.