little heads up for gender indicators on smut i write (this is not applicable to other writers, this is just how i indicate reader's sex & gender on my smut posts)
fem!reader : i refer to the reader with she/her or she/they pronouns, i use feminine terms and petnames, reader has female anatomy and is referred to as a woman, girlfriend, or girl
afab!reader : i try to reduce pronoun use as much as possible, reader has female anatomy but i will commonly use they/them for reader, avoiding any gender indicating terms
masc!reader : i refer to the reader with he/him or he/they pronouns, i use masculine terms and petnames, reader has male anatomy and is referred to as a man, boyfriend, or boy
amab!reader : i try to reduce pronoun use as much as possible, reader has male anatomy but i will commonly use they/them for reader, avoiding any gender indicating terms
gn!reader : i avoid using any sex indicators and default pronouns are they/them, this normally only works with headcanons
tm/ftm!reader : i use masculine terms for reader, including man, boyfriend, and boy, but reader has female anatomy (sometimes tm!reader may have top surgery scars), and i write based on my experiences with my ftm exes
tf/mtf!reader : i use feminine terms for reader, including woman, girlfriend, and girl, but reader has male anatomy (sometimes tf!reader may have [barely noticeable] facial feminisation surgery scars), and i write based on what my mtf friends have told me makes them feel most comfortable