Masculinenonbinary- is a non-binary spectrum gender for those who have difficulty knowing whether they're fully masculine, fully non-binary, or fluid between male and non-binary. Those who are 100% male or non-binary, or confused about whether their gender is male or non-binary, can identify as this gender. It is not to be confused with questioning one's gender or being bigender.
The sexuality equivalent is nonbinarymascsexual