I currently have an Enfp housemate (she tested and is definitely and Enfp). We're a lot alike in a lot of ways: we both value freedom as others have said, quirkiness (we're not followers), off beat sense of humor, and we both like to keep pretty busy with fun activities. Also we're both into cooking good meals and she is a phenomenal baker, so feeding friends and making a meal special is something we both enjoy doing.
Some of the differences I've noticed: She can go on and on about something she's researched or finds interesting in connection with something else that she saw or heard, and while I think it might be interesting as well, I find myself at some point in the conversation getting a little bored with all the information she's giving me, maybe because a lot of it is opinion or subjective?
Another difference is that she is not always aware of her physical surroundings. She trips, she bangs into things that have been there awhile, she is physically kind of sporadic in her movements. Even she admits to this tendency, that it takes her awhile to adjust to a new environment.
I can see how the two types could be seen as very similar, especially if one type, like my housemate is a low E.
Anyway, my 2 cents.