This is incredibly pretty and deserves a serious round of applause.

The UI is gorgeous and very usable, the only thing that threw me is when you hover over a line, I wish it would show which country it corresponds to.

With that said I still find a log-log plot much easier to interpret, and so far, the gold standard on trend clarity visualization remains Aatish Bhatia's (https://aatishb.com/covidtrends/). Maybe a way to switch to a similar log/log scale? Otherwise it's very difficult to figure out when a given country approaches the knee.