[m0llusk]

> The last mathematicians considered to have a comprehensive view of the field were Hilbert and Poincaré, over a century ago.

Henri Cartan of the Bourbaki had not only a more comprehensive view, but a greater scope of the potential of mathematical modeling and description

[coffeeaddict1]

I would also add Grothendieck to that list.

[pathsjs]

Grothendieck did not have a comprehensive view of mathematics, nor he ever claimed to. There are vast swathes of mathematics (e.g. PDE or probability) that never fell under Grothendieck's radar