Much praise over the last six months has been lavished on the Johns Hopkins Covid-19 Dashboard. I have always found that site hard to read with too much information in one place. I find the New York Times graphics to be a huge improvement.
The state and territories are sorted by most cases per capita and you can see the difference between places that are having a huge uptick now (the Dakotas) versus ones that are having a second big wave (Guam, Utah, Idaho). It is also notable that Guam and Nebraska had much earlier first waves than Idaho and Utah.
Both these sites also offer the world view. It is interesting to see how the African countries have kept their cases very low, especially compared to Europe.
The "small multiple" charts are also a nice touch.
Much more to explore here.