I have only been in 3 serious and long term relationships and I'm currently in one, sorta (long story, laff). As such the infos that I can share are based purely on analysis from a distance involving none of the finer nuances you only learn about when you are actually in a relationship with someone.
I found out about MBTI through an online dating website (OKCupid specifically). After discovering MBTI I started paying attention to wether or not people I found interesting had taken the MBTI and what their results were. It became a little game of me trying to guess their type by their profile then comparing that to the results. The following is based purely on information given to me by others in their online profile.
I found INFP's to be the best match by a good margin.
INFJ's came in second.
NT's came in 3rd.
There was only one female that sparked my interest that was not one of the above "types". Turns out she was an ISTJ accountant *boggle*.
P.S. My wife (seperated) is a very lovely ESTP , granted I want to snap her neck at times which she gets a kick out of... but yeah good stuff.