I should note that the Dark World of ALttP was specifically created by that Ganon's wish. Therefore we can say nothing about any other Dark Worlds in relation to it as far as appearance and form.

I should also note that the Zuna are descended from pyramid-builders, which the Gerudo are never shown to be. It is quite possible that the Twili are descended from Gerudo, however, or are at least related to them, influenced by them, or worked with them. The Cobble tribe from PH, however, are shown to be a race of pyramid-builders. I'd say it's more likely that the Zuna are descended from them, especially considering that both races have similar garb.

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