1. Pele (2 World Cups)
2. Ronaldinho (Won every top football tournament)
3. Zidane (Almost won every top footaball tournament)
4. Romario (+1000 goals)
5. Maradona (club and international success)
6. Ronaldo (club and international success. perhaps best pure striker ever)
7. Cruyff (club and international success. inventor of "total football")
8. Messi (unparalleled club success)
Your list is based on the players of last 2 decades, added with only famous ones. You've missed many great legendary players like Franz Beckenbauer, Alfredo di Stefano, Ferenc Puskas, Garrincha, George Best, Paolo Maldini, Michel Platini, Gerd Muller, etc. Messi's name can't even be included this early among these legends yet (probably in future though, but just not yet.)
share"Messi's name can't even be included this early among these legends yet"
Why? His career is already over. Either you think he was not great, or you include him in the list.
I would add to your list: Alfredo di Stefano, Ferenc Puskas, Zico, Gerd Muller, Paolo Maldini & Franz Beckenbauer.
I still think Pele is still the best ever, followed by Maradona and Messi.