I built some tooling around the U.S. CDC data to better understand this at a state level: https://mcculley.github.io/VisualizingObservedDeaths/
The site itself is just handcoded HTML: https://github.com/mcculley/mcculley.github.io/blob/master/V...
The polar area diagrams are generated by Java code I wrote for this purpose: https://github.com/mcculley/ObservedDeathVisualizer
The bar charts and the line graph are generated by Datawrapper (https://app.datawrapper.de) using the CSVs exported by the aforementioned code.