I think Ian M. Banks (‘The Culture’ series) already had that, unless that’s specifically what you were referencing. Though humanity wasn’t a part of The Culture, as explicitly explained when they were viewing us like apes in a zoo, so the ringworlds with primitive cultures on them that had AI machine minds tending them weren’t from the wake of humanity.
I think Ian M. Banks (‘The Culture’ series) already had that, unless that’s specifically what you were referencing. Though humanity wasn’t a part of The Culture, as explicitly explained when they were viewing us like apes in a zoo, so the ringworlds with primitive cultures on them that had AI machine minds tending them weren’t from the wake of humanity.