That cisgender means a biological male who identifies as a biological male.
Which would include gay men. And presumably bisexual men. But not nonbinary or bi-gender men?
This is all getting very confusing.
I doubt that even the "gender scholars" who make up this stuff can agree on their own rules. Kind of like IRS agents who can't agree on how to interpret IRS rules.
I believe ‘cisgender’ is straight. So, a cisgender man, would be a straight (non-queer).
Cisgender means normal. They just can’t call it normal because calling it normal would highlight the deviance of other sexual predilections.