It's something of an illusion that these are unique settings, because it's the same data being used to store different information depending on the race.
All races have an "extra feature" slider that is variably used to alter muscle definition (Hyur/Roegadyn), ear length (Lalafell/Elezen) or tail length (Miqo'te/Au Ra).
All races have a setting with two on/off options and a colour choice - for most it gives them some unique tattoo options, Wildwood Elezen have unique earrings, and Au Ra get the limbal rings.
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I've said before, I'm fairly sure the claim that they'll have "more options" is a misunderstanding of the devs saying they would have unique features not available to other races, which isn't the same thing.