In light of my typing thread, I've noticed that both INTP and ISFJ have been suggested as my type. Some admitted to being rather torn between the two but with INTP winning out. This is interesting as INTP and ISFJ have only one letter in common. So you may be wondering, why is it undecided between two such seemingly different types? Wouldn't it make more sense to be undecided between, say INTP and INTJ? or INTP and INFP?
INTP and ISFJ may look different on the surface but they actually have quite a bit in common. Both are informative types. Both have a behind the scenes interaction style. And perhaps most importantly, they both have the same top 4 functions, but in a different order. INTP being TiNeSiFe and ISFJ being SiFeTiNe. I think if one has a well developed tertiary, it could possibly be mistaken for the dominant of the other type. I've known a couple of people who seemed to give off both INTP and ISFJ vibes simultaneously and it was difficult to parse these.
I've also noticed this phenomenon with other people where I they seemed to be in between two types sharing only I or E in common. There's someone on another forum who's deciding between INFJ and ISTP. Again same functions, different order. INFJ is NiFeTiSe and ISTP is TiSeNiFe. In addition, both are directive and chart the course interaction style.
I also know a couple of people that I'm having trouble deciding if they are ENTP or ESFJ. Again, similar phenomenon at work.
So I'm wondering if you have witnessed this in practice, either in yourself or with people you know?