Yes I know that there is already a mod of this but it includes interesting choices for flags, has two Poly flags, a couple of flags with broken names, incorrect flags and has flags that do not need to exist such as Cis and Straight as they don't need them for various reasons.

Flags included:
Progress (the correct one)
Men Loving Men (MLM)
Women Loving Women (WLW)
Bisexual
Pansexual
Polyamory
Demisexual
Asexual
Nonbinary
Genderfluid
Genderqueer
Agender
Demigender
Intersex
Bigender
Transgender