Exile, not always literal, though.
Non-belonging.
Real or perceived rejection by society.
Mediterranian settings (wherever, North, South, East, West, Mediterranean-inspired fantasy settings...).
Lgbt themes, almost exclusively in the background.
Very often but not always, coming of age stories, or when not that, 'new turn in life' stories. With lots of questioning past beliefs.
Some kind of nature theme. Often related to plants, often with an evolutionary adaptation focus.