The Atlantic [1] has an interesting article on the role of super-spreaders. It possibly suggests a particular contact tracing approach but it also suggests that, especially early on, there was probably a great deal of randomness in how events unfolded in a particular place. I can't speak to the medicine but it has certainly seemed as if a lot of outcomes have been pretty random. (With some exceptions like nursing home deaths that were just bad policies.)
[1] https://www.theatlantic.com/health/archive/2020/09/k-overloo...