Socrates seems to be accepted as an INTp. But what about the other ancient Greek philosophers?
Plato: a bore according to Nietzsche, but student of Socrates and teacher of Aristotle
http://en.wikipedia.org/wiki/Plato
Aristotle: "the Philosopher"
http://en.wikipedia.org/wiki/Aristotle
Pyrrho: founder of the the school of Skepticism
http://en.wikipedia.org/wiki/Pyrrho
Antisthenes: founder of the school of Cynicism
http://en.wikipedia.org/wiki/Antisthenes
Zeno: founder of the school of Stoicism
http://en.wikipedia.org/wiki/Zeno_of_Citium
Epicurus: founder of the school of Epicureanism
http://en.wikipedia.org/wiki/Epicurus
Protagoras: "man is the measure of all things"
http://en.wikipedia.org/wiki/Protagoras
Xenophanes: epistemology & criticism
http://en.wikipedia.org/wiki/Xenophanes