I was thinking this would be cool as a tree map (https://en.m.wikipedia.org/wiki/Treemapping https://en.m.wikipedia.org/wiki/Treemapping) since that allows for

I was thinking this would be cool as a tree map (https://en.m.wikipedia.org/wiki/Treemapping https://en.m.wikipedia.org/wiki/Treemapping) since that allows for nicely visualizing hierarchical categories.