Gandhi was an INFP, not a 'J' type. People misstype him too much as they do not read his background from an actual source (=not Wikipedia).
Read what he writes or how find some of his speeches: can be helpful.
-no "future-oriented" stuff, most stuff is in the here-and-now.
-very interested...
Is Spinoza an INFJ? I am going to say yes.
Several people often think this philosopher is an obvious INTP due to the famous quote: "ethica more geometrico demonstrata" and the style of his masterpiece, "Ethics". They believe that such a way of thinking can be conceived only by a Ti user...