I haven't read much about the instincts, sx/sp seems most accurate from what I know about them. LL has quality time just nudging out physical touch, but they're very close.
However I can't stand physical touch with anyone other than my partner and my son... (and pets!). Almost like it's too intense for me to take with other people, this huge clashing invasion. Cymbals, thunder... I've gotten better at controlling it, but mostly I just avoid. A small brush of the hand when someone passes me something, used to send electricity flying through me, my heart accelerating, breath caught. Didn't matter
who it was. Well it still does this, but I've learned to subdue it somewhat. It can make me quite nervous about social encounters. If someone touches me I just can't even think... almost like I'm not wholly myself anymore. I don't know it's hard to explain.
One time (when I was younger) I had just bought a mug at this shop and the salesman handed it to me over the counter. His fingers brushed mine and the shock of it made me drop the mug. It hit the counter and shattered. For a second I stared at him, wide eyed, then I fled. (wow that is embarrassing to recount)
Of course this probably says more about how messed up I am than anything else
So with everyone else I show love with quality time, and giving little gifts that I think they'd like.