Here is an interesting resource for the Doctors of the Church. I can't say that I have sympathy with the perspective of the essays about each doctor, but the links at the bottom of each page are rich.
For instance, the author seems to think that St. Albert the Great was an innovator in bringing pagan thought into the Church and that the Church resisted Aristotle because he was pagan. The truth is, though, that the Church had allowed a very rich dialogue with Platonism for centuries. What they had doubts about was Aristotle thought itself, not his paganism. Also, I cringed at this on the St. Jerome page: "Please exchange He to She, God, Lord, Jesus or whatever you feel comfortable using as you pray."