Multisexual

Multisexuality or plurisexuality is an umbrella term for any form of attraction to more than one gender. It is synonymous with pluralian, and m-spec (multisexual spectrum). It can describe people who are bisexual, pansexual, polysexual, omnisexual, etc, or be used as a stand-alone identity if one does not wish to specify their sexuality further.

The opposite of multisexual is monosexual.

Flag
The flag was made official on February 13th, 2019 and the creator went by "synp."

Peace is represented by the purple bar at the top, and unity by white, light blue stands for freedom and the pink/magenta bar is for love and compassion.

Resources

 * 1) https://www.deviantart.com/kinkflagsrus/art/Multisexual-Official-Pride-Flag-785458128
 * 2) https://pride-color-schemes.tumblr.com/post/146831903966/multi