ENFJs are very similar to us, especially if they have a strong Ni. But I think I kind of get what you mean...I mean, generally, ENFJs are different than INFJs, especially if they lean heavily on their dominant Fe. I don't know how I would gauge which type best matches the INFJ on the outside.
Ni, Fe, Ti, Se = INFJ
Fe, Ni, Se, Ti = ENFJ
Ne, Fi, Te, Si = ENFP
Fi, Ne, Si, Te = INFP
ENFJs have extroverted feeling as their lead function but ENFPs have extraverted intution as their lead function. ENFJs have all the same functions as INFJs, just rearranged, but ENFPs have the opposite functions of INFJs, but in the same order.