They should add one more map: of their website.
I think the interests in these are
1. historical
2. how things can go wrong / be misunderstood in systems of human knowledge.
3. cartography that is beautiful.
with #3 probably the most important - I think the site is beautiful, but only if you can disagree that design is only beautiful if it is functional (emphasis on the only there)
If you flip it from "Explore" to "Research", the UI becomes a lot more practical.
Using ?viewingMode=research makes it much easier to use: https://oculi-mundi.com/collection?viewingMode=research
Cool pictures, if you can get to them.