Well, during the era in question, Marsha wouldn’t have (and didn’t) identity as trans. The identity wasn’t yet an established construct.
It’s certainly true, of course, that members of gender minorities and well as members of sexual orientation minorities contributed crucially to the Stonewall riots.
I certainly do acknowledge trans people. In fact, I’m outspoken about educating younger queer people about the realities of the beginnings of our movements.