I must admit that I have never been interested enough in these nutjobs to bother reading any long psychological studies of them- and I thought "Silence of the Lambs" was one of the WORST movies I ever saw.)
I'm not up to speed on cannibals. Let's start with these five:
Bar-Jonah, homosexual; Dahmer, homosexual; Haarman, homosexual; Gein, victims exclusively women, but I'd guess asexual; Sagawa, heterosexual.