The crucial point is that gender identity (being trans) is distinct from sexual orientation (who you are attracted to). A trans woman can be straight (attracted to men), lesbian (attracted to women), bisexual, or asexual. This distinction is the source of both powerful solidarity and, at times, misunderstanding.
: The term LGBTQIA+ has evolved to include Lesbian, Gay, Bisexual, Transgender, Queer/Questioning, Intersex, and Asexual identities, recognizing that sexual orientation and gender identity are distinct but often share a history of marginalization. Key Features of Transgender Culture