Would you be open to suggestions? Off the top of my head, there's Explorable Explanations from https://ncase.me and, while not as educational, The Space Elevator on https://neal.fun
Definitely, Issues or PRs would be splendid. Though, I've had a hard time finding similar essay-like deep dives that fit this pattern on https://explorabl.es (I see a lot of what seem to be just an individual specialized simulation, games, or traditional e-learning courses), and the Space Elevator page feels like more of an interactive visualization in my opinion (though still very cool)
