I might start, how many genres encompass New Adult? I've fluctuated between Middle Grade, Young Adult, and New Adult. Often I have weird combinations like "A twenty year old mentally regressed to a thirteen year old." Often my stories explore themes of reliving ones teen years, as if one had a hard time coping with the adult world.
I'm a fan of Cyberpunk, but have been drifting into Spypunk, which is essentially Cyberpunk but focusing on rogue espionage rings, and the street finding its own use for spy technology in the tech underground. Often the MCs are lone wolves, who have been either disgraced by their old agency, or never had the ambition to join a government agency.