The variation in appearance within MBTI types can be explained by:
1: Genetic differences
2: Epigenetic/Environmental differences
3: Influences from the other three sides of the mind
(ESFJ)
These are my four ESFJ examples, you should be able to see that the left and right column each have distinct features. The left is what I have identified as pure ESFJ and the right are ISFP influenced ESFJ's. In these two examples you can see the innocent and unassuming Fi Hero gaze, and the rounder and fatter features that are typical of ISFP's. Only slight differences in the structure of the face show ESFJ influence, so unless you know how identify the interplay between the sides of the mind, then you should assume you are seeing a representation of the Ego, to avoid mistyping.
When one of the three sides of the mind influences the face it always represents a natural development of that type; specifically the Hero function of that type. The ESFJ's shown on the left would be expected to be more classically Fe, and the ESFJ's on the right to have more effective use of Fi from their ISFP Unconcious. ISFP influenced ESFJ's also have lower Pre-NT.
(INTP)
In these four examples you can see that there is one outlier. It is Edward VIII at the bottom left who has ISFP and therefore Fi influence. The other three are ESFJ (Fe) influenced INTP's which is quite a typical influence for INTP's who have become famous through a career.
Friedrich Schiller
ENTJ (Te) influenced INTP
Arran Lomas
INTP (Ti) influenced ISFP
Henry Ford and Bernard Montgomery
INFP (Fi) influenced ESTJ's
Bjorn Andreas Bull Hansen
ESFJ (Fe) influenced ISFP
John Lennon
ISTP (Ti) and ESTJ (Te) influenced INFP
Thomas Edison
INTJ (Ni) influenced ENTP
Quentin Tarantino
ESFP (Se) influenced ENTP
Bertrand Russel
ISFJ (Si) influenced ENTP
Before I knew about the four sides of the mind I incorrectly typed Russel as an ISTJ, but his eyes and philosophy are typically ENTP. His ISFJ Subconscious, is why he acts like a typical wise old man.
