8. Mother Teresa – ISFJ
According to mbtionline.com, the least common MBTI is INFJ (Introvert, Intuitive, Feeling, Judging), at least in the United States. This type is commonly called the advocate. Supposedly, such personalities are thoughtful, idealistic, and versatile. Advocates are altruistic, demanding fairness in matters such as social justice. They are, frequently, also effective orators, presenting their beliefs with passion. As such many become leaders. According to some, Adolf Hitler was one such personality. Another was Mahatma Gandhi. Carl Jung himself is described as having an INFJ personality, joined by Florence Nightingale, former American President Jimmy Carter, Eleanor Roosevelt, Russian writer Fyodor Dostoevsky, and Martin Luther King. Certainly, an eclectic group. Yet all in the group were writers of note, though on widely diverse subjects.
In contrast, the most common MBTI is ISFJ (Introvert, Sensing, Thinking, Judging). More than twice as many women as men exhibit this type. Among them was Mother Teresa, whose charitable works during her lifetime led the Catholic Church to canonize her as Saint Teresa of Calcutta. Rosa Parks, who worked with civil rights leaders in Montgomery during the bus boycott in 1955, is said to have been an ISFJ. Clara Barton, a self-taught nurse, provided care to wounded and sick troops during the American Civil War. After being exposed to the Red Cross during an 1869 trip to Switzerland, she returned to the United States. There she helped found the American Red Cross, serving as its first president. She too is described as an ISFJ personality. Barton also advocated for professional training and certification for nurses, both something she never attained for herself.