This is created using jekyll datafiles:
The data is also available directly for download.
How neat is this that I can both consume the datafile as data…
Roberts Scalia Kennedy Thomas Ginsburg Breyer Alito Sotomayor Kagan
… and at the same time make it available for download?
You can read more about how this works at https://esq.io/blog/posts/dogfooding-with-jekyll.