So, anyway, here’s GLAAD’s Media Reference Guide.
And here’s The Human Rights Campaign definitions:
One’s innermost concept of self as male, female, a blend of both or neither — how individuals
perceive themselves and what they call themselves. One’s gender identity can be the same
or different from their sex assigned at birth. While most people develop a gender identity aligned with their biological sex, for some gender identity is different from their biological or assigned sex
The notion that there exist only two genders, each solidly fixed, biologically based and attached to various expectations for behavior, appearance and feelings. The binary gender system, while predominant in most cultures, is not the only model of gender that exists; more nuanced, non-binary understandings of gender have existed throughout history and across cultures.