Soy Boy
Soy Boy is a term that describes men who don't adhere to traditional gender norms and typically act feminine. However, they don't feel a disconnect from the gender they were assigned at birth (assuming they are cis). Trans men can also be soy boys; in that case they still present or act quite feminine, but feel no disconnect from the male gender.
The term is usually used in a derogatory manner. It's commonly used as an insult by the alt-right for more left-leaning individuals, especially men who support LGBTQIA+ rights, feminism, or veganism. Some men try to reclaim the term or use it ironically.