dc (dimensional charting)

Metric Insights includes the dc library with an example. Although this is not a chart type that is configured to immediately plug and play into your reports, it is included to show you the complexity that can be achieved in JavaScript charting. With some modifications to this chart type you should be able to apply it to any of your data results.

You can view documentation and an example of dc (dimensional charting) at http://nickqizhu.github.io/dc.js/