Great post... The two I would have been interested in seeing, if they support that type of chart, are Google Charts and plotly.js. (maybe I'll look into it if no one else does)
Pretty curious to see what else people come up with in comments...
Hi, author here. Plotly was the biggest surprise for me when I was writing the two blog posts, and I definitely want to try out plotly.js as well. Could take a few weeks, though :) Go ahead and recreate that chart yourself! I already had John Muyskens from the Washington Post Graphics team add the brand news Python Leather library to the repo: https://github.com/OpenNewsLabs/onechart-twelvechartinglibra...
Agreed, when I looked at every JS plotting library that I could find about a year ago, those two were far and above the winners for open- and closed-source, respectively. Now plotly is free and open source and seems unmatched in its abilities.
The author also had the same experience that I had with the "reusable" libraries built on d3: none of them really work that well either because of bugs or their inflexible interface.
Pretty curious to see what else people come up with in comments...