What does natural Black/African Ancestry hair look like, is it an afro?

Obviously there are many ways different hair types can be worn, combed, braided, cut, etc., but is natural, untouched Black/African decendent or ancestry hair an afro like in the 70s or was that styling? I imagine if it is natural, it's normally like any hair cut shorter to make it easier to manage so that's why one might see many lengths?