Here's captures with 2, 1 and 0 in OCR0A.
I'm using a DSO quad to look at it so the bandwidth is a lot less than 60MHz. I also hooked up an old green screen 'scope and the results were similar (though maybe 50% a less ringy).
I'm working with a bare chip in a breadboard so suppose the ringing could be due to the breadboard as well as the 'scopes. FWIW I looked at the output from an Arduino Uno and it was a little bit better.
Whatever, the important thing right now is that I'm not going crazy and the timer works as specified. I can get on with the rest of software.