So is Greco still considered the ultimate grappling base for MMA?

For many years this was the case, with many former champs dominating the sport from the early days of the UFC Greco was seen as the best base for MMA and Karelin seen as the greatest 'what if' in history.
Logic held that submissions can be learned later.
Striking can be developed.
But mastery of body control to the highest level takes years, and the Greco style was seen as most combat oriented in this way.

So does Greco still hold the title as best grappling base for a successful mma...

So is Greco still considered the ultimate grappling base for MMA?