I think another very useful number would be a state by state tracker on how many positive tests are coming back per state as a percentage of total tests administered per state. If a state were to double total tests overnight, would their positive cases also double or would there be a lower percentage of positives but a higher raw number of new cases?
The total number of people who exhibit no symptoms after testing positive is not an easy number to pin down, but I have seen some numbers up in the 50-70% range and a recent report of over 80%. (The accuracy of tests is always a concern in any of this.) I would also assume that some people are being tested because they do have symptoms of something and some of those come back positive.
https://www.kshb.com/news/coronavir...est-positive-for-covid-19-86-show-no-symptoms
https://hub.jhu.edu/2020/05/12/gigi-gronvall-asymptomatic-spread-covid-19-immunity-passports/