The Eastern supply chains are mostly restored but liquid soap, alcohol, Lysol, and other cleaners are unobtanium. Some frozen foods are still cleared out because nobody is eating out and stores haven't compensated for the demand.
Surely data are the aggregate set of anecdotes, but while I see a lot of spot anecdotes, I don't see much data.
However, I just saw packets of yeast for sale again. That was the last thing that I had trouble finding.
But take my observations with a grain of salt, because part of my response (and maybe others) to COVID is that I haven't felt like shopping around much; I mostly just go to one store and make do with what's there.
Makes sense. I never drive or shop, so I am kind of used to people bringing me off-brand stuff. And I buy in bulk, so I am already set regardless, but I am told by friends that the shelves are full (sometimes they even send pictures!)
Maybe we are lucky that so much is semi-locally sourced.