The ATU index is also worth looking into: https://en.wikipedia.org/wiki/Aarne%E2%80%93Thompson%E2%80%93Uther_Index https://en.wikipedia.org/wiki/Aarne%E2%80%93

The ATU index is also worth looking into: https://en.wikipedia.org/wiki/Aarne%E2%80%93Thompson%E2%80%93Uther_Index https://en.wikipedia.org/wiki/Aarne%E2%80%93Thompson%E2%80%9...