In my setting, the fey elves are strictly magical classes, without martial classes. Humans in the Material Plane are especially martial classes. Nevertneless, an elf who grows up in human culture can become a superlatively good at a martial class, including a +2 Strength improvement. Viceversa, a human who grows up in the ethereal Feywild can be superlatively good at a magical class, including a +2 Charisma improvement using a half feat with an additional +1 to get the +2. Thus there is no essentialism. Merely, different cultures.