many intersex possibilities on the gender spectrum
Sex and gender are different, although often conflated because a lot of the times they’re still used interchangeably, as in most contexts sex and gender do align, but not all.
Sex is usually categorized as female or male but there is variation in the biological attributes that comprise sex and how those attributes are expressed. (That’s the part your article and image talk about; sex.) Gender refers to the socially constructed roles, behaviours, expressions and identities of girls, women, boys, men, and gender diverse people