It's a question about favorites, so everyones opinion is equally valid.
For example, I like Heloise d’Argenteuil. Her view on marriage being contractual prostitution was a fun & thought provoking read back in my college days. However, she's hardly my favorite thinker.
Francis Xavier is my favorite public thinker. That's not because he's the greatest thinker that ever lived (I'd put Democritus as that one), but rather because he's one of the founders of the order of monks that educated me in high-school/college. He's who I resonate with. It's not a value judgment.
Any homogeneous group has a limited number of opinions. Knowledge is a strength. The uniformity of this community is a great weakness, not a "healthy spectrum".