Awesome, mutual humoring is the best.
The topic of VI fascinates me as well. I read a study quite a few years ago now where they would put people of all types in a room together (this was only dealing with MBTI though)...where the participants could go up and look at each other but were not allowed to speak...and then they were asked to type the individuals in the room. The findings were that NFs were the only group that could type other NFs (only, not other types) with an accuracy that demonstrated significance. When asked how they did this the most common response was "a look in their eye" <-which makes total sense to me in ways I can't describe with words. So it's just me that's interested in the eye thing.
Oh! That's really cool. I'm not into MBTI enough to say that I could "type another NF" but if someone put me in that situation, and asked me which people also had strong intuition (not even in MBTI terms, just the normal definition of the word) I would say it was an eyes thing too-- mostly because when I feel that way IRL, it's usually an eye contact thing and a feeling of...understanding? Or silent communication?
What do you do small.wonder? What are you looking at when you visually type points? Like, if you look at my photo assuming you think I'm accurately typed...what would be 7 and what would be ENFP? What would be 748 (478)?
By "do", I assume you mean when I see visual similarities between Enneagram types? Honesly, I didn't go hunting for that, or trying to type by appearance or physicality. It was a realization over time, after meeting and helping to facilitate type conclusions for
lots of people over about five years now. I have kind of an unusual situation, in that the mega-church (read: at least over 20,000 people. I know, cray.) that I attend is very conscious of emotional/spiritual health and thus, most people at least know what the Enneagram is. The downside to this, is of course, most of those people (that I've interacted with) either totally abuse the thing out of ignorance, stereotyping and such. That or they take the test once, say "cool" and never go any further. The upside is that there are still hundreds of people who
do actually use the Enneagram well, and are accurately identified (or were open to walking through it with me,
to accurately identify, so I could Guinea Pig them

).
But so, yeah, it's more of a pattern that I've seen over time, especially the types that are more populous that I know
many of (thus being able to mentally line them up in my mind and go "ooooohhhhhh".) Because these things are "patterns", I never view them as absolute, just common. Some things are physical, like a
lot of male 9w1's that I know are tall and thin athletes, but a lot of the time (I must admit) is intuitive-- it's a
vibe. Those 9w1's tend to feel "soft" or like I could put my hand through them (especially the SO-first ones). I know a
lot of female 1's that
actually look alike, the taller side of average height, longer hair, thin build, stronger nose or cheek bones-- again, this is just a pattern, not a rule. Some things are even health similarities, which makes total sense given that our emotions and idiosyncrasies affect the body (6 and anxiety, for example). In addition to all of that, these things also apply: body language, style of dress, habits, vocal speech (sound and word patterns), even life events (I know at
least four 6+7 (so 6w7 or 7w6) females who have
constant car issues, like
uncanny situations!). Haha, some of it I don't understand, I just file it away.
But there
really is a
lot there. I
never ever project type onto people (it's the ultimate abuse of Enneagram) or give my opinion of type unasked, but there have been many many times that I knew what they were before they reached an actual conclusion-- some of which was based on the above, but
always married with and balanced by motivation, health patterns and all of that textbook stuff. No one should ever be "typed" by appearance alone.
To answer your question about your own type, I would really only comment on Enneagram core and
maybe instincts. I don't subscribe to tritype as a legitimate or beneficial concept, and I'm not nearly well versed enough in MBTI.
7's seem to be one of the most
varied in physical appearance (fitting, huh?

) but I have noticed some patterns for specific varieties of 7:
- 7w6: shorter, rounder face, more warm or "class clown"-ish. More "of the people". Style is more conformist (whether to plaid mainstream, or Punk Rock, Grunge etc. Style to "belong").
- 7w8: taller, more square, almost always athletic. More "leader of the people". Style is more non-conformist, or afterthought.
There are also lots of "this type is often more _______ than this type" patterns, that are physical. 3 and 7 for instance: 3 is usually much more "groomed/styled" than 7, while 7 is usually much more "bouncy" or "loose" in their body language than 3.
For instincts, these things are usually true, core aside:
- SO - verbal (talks a lot), focused outward.
- SX - intense and can be confrontational, very focused on the other (not distracted by outward influences).
- SP - non-verbal, closed, focused inward.
But again, this stuff should never be
the basis for typing a person, they are just patterns I see most of the time (there are always exceptions).