Devin Knight looks at the Tornado chart:
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The Tornado has a few limitation that should be aware of before using
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If there’s a legend value it should only have 2 distinct values
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Each distinct category values is a separate bar with left or right parts
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Alternatively, you can have two measure values and compare them without a legend
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I’m split on whether I like the tornado or not. It is intuitive and information-dense, which are two major factors in its favor. It is, however, difficult to read and compare. This seems like a useful “big picture” chart, but you’d want to organize the data in a different way when you start drilling down.