Those are interesting ideas.
In fact, I have been considering for some time the possibility of revamping both DataPortals.org and PublicBodies.org with static site generators that are updated automatically with Github Actions every time the underlying csv is changed.
I have done something like this in this data visualization, which uses Python, Pandas and Folium to generate the Leaflet.js map visualizations, which is then embedded into a site generated with Markdown and Jekyll. The data is then fetched to build the site again once a day, scheduled with Github Actions.
Maybe something similar for these projects could work, and even save on the hosting costs that these sites incur.