Biologically there's male and female: that how reproduction tales place. there is no third sex never mind four or fifth because two are all that is required for gene interaction which is what its all about. Yes very occasionally you have the occurrence of genuine aphroditism (0.0012%) Klinefelter syndrome and other flaws* in gene coding but the idea that there are more than two sexes never mind a "complex spectrum" is patently absurd: how does biological reproduction work with these "complex spectrum people" ? Do they do magic interweavings or just #### like the rest of us?
All the rest is not sex nor "gender" but effectively individuality and thus personality.
*from a reproductive perspective as many have fertility problems.