Sharing Ni remains very handy, but I think it's mostly growing up together and rolling into an appropriate form of communication in part out of necessity, I think sustained effort on everyone's part to become friends the way only teenagers can is what set these people apart - we've ventured beyond type to just accept the person completely. This includes my detachment. By now they are all interesting adults - they feel like equals.
I get along well with a lot of Sensing types.
I have a lot of S friends in college but I would say my best non-NT friends are the ones back home which include an INFP and two ISTJ's.
A lot of my friends are ESFP's. ESFPs, along with ENFP's, tend to be easy to get along with since they are enthusiastic and easygoing about things.
(However, I don't know many ENFP's- maybe one or two of the ESFP's would test as ENFP (especially with that blasted Humanmetrics test)- but I think they are ESFP.)