Sex appeal is way too vague to sort in terms of type. It would come down to whether sex appeal is a matter of nature or nurture. I would imagine sex appeal would be more prominent in EFJ types, all that sex being extroverted without a T filter.
Mentally, being INTP, intellect is very attractive to me, as is an aversion to the obvious. I find INTPs attractive, not because they are INTP, but because they seem to emanate a certain intrigue, something familiar, yet original. I've no doubt It's more to do with the fact that I'm the same type. On the other hand, ENFPs have caught my attention in a very different way with their subtle F shaped N. There's always a different twist on plain thought from an ENFP. Sex appeal is more about my mind than my body. Probably why I'm so picky.