Mollgender, also known as molligender, is a gender with two definitions:
1) A gender identity that is largely related to a certain gender, but feels soft, as if it has blurred into other genders.
2) A gender that is quiet, soft and subdued. Can be used to mean a gender that feels gentle, not too present or blurred somehow.
Mollgender people have genders that are soft and blurred, but not obscure, just soft and naturally blurred. Mollgender can be combined with any other gender to specify further, like mollboy/molliboy, mollgirl/molligirl, and so on and so forth.
History
Mollgender and its flags were coined/designed by an unknown person at an unknown time.
Resources
https://www.deviantart.com/pride-flags/art/Mollgender-Molligender-633906857
https://www.deviantart.com/pride-flags/art/Mollboy-Molliboy-633906839
https://www.deviantart.com/pride-flags/art/Moll-agender-Molli-agender-650028959
https://www.deviantart.com/pride-flags/art/Mollfluid-Mollifluid-633906851
https://www.deviantart.com/pride-flags/art/Mollgirl-Molligirl-633906861