AXAB

AXAB or Assigned X at Birth is a form of assigned gender often labelled on babies with intersex traits in certain cultures, representing those who don't neatly fall into the categories of men or women, though in many countries this form of categorization is not practiced due to lack of understanding of the sex and gender spectrum

Resources

 * 1) https://beyond-mogai-pride-flags.tumblr.com/post/169796472125/axab-trans-pride-flag