Amalgagender

Amalgagender is a nonbinary identity defined as "A gender that is affected by, or mixed into one's intersex identity." It is a label intended for use by intersex people only.

History
In 2018, Washington state began to allow "X" gender markers on official documents, with the law stating that ""X" means a gender that is not exclusively male or female, including, but not limited to, intersex, agender, amalgagender, androgynous, bigender, demigender, female-to-male, genderfluid, genderqueer, male-to-female, neutrois, nonbinary, pangender, third sex, transgender, transsexual, Two Spirit, and unspecified."