i think it's useful to look at the functions in addition just letters in these cases, because they highlight more nuances. for instance, i'm interested in many ideas but i'd rather delve deep with a handful of people - which kind of makes sense, given an N-E, F-I matchup. whereas a good NFJ friend of mine is more interested in interacting with groups of people but delves deeper with fewer ideas- F-E, N-I.
Yeah, you are right... It seems that it would be quite hard to make an order of extroversion... Fe should probably make a lot of this social kind of extroversion, but that looks just weird:
ExFJ Fe xx xx xx
IxFJ xx Fe xx xx
ExTP xx xx Fe xx
IxTP xx xx xx Fe
IxFP Fi xx xx xx
ExFP xx Fi xx xx
IxTJ xx xx Fi xx
ExTJ xx xx xx Fi