Yeah, from what I've read, Burr is the one with real legal trouble. Loeffler has political trouble, but probably not legal trouble. Feinstein and Inhofe seem to be pretty clear on this. I care at least a little because Feinstein is my senator, so I have to decide whether to vote for her (and she did have a significant challenger last time). Of course, at her age, it's unlikely I'll have that chance again. It seems her husband, who holds his assets separately from hers (hers are in a blind trust), sold a significant stake in a cancer-treatment company--not exactly the kind of business directly impacted by the COVID-19 situation. The sale was also consistent with his trading history (he's a very wealthy guy, so large stock sales aren't uncommon). Additionally, she was not at the two, early COVID-19 briefings.
More will be learned--but it seems there is a lot more to the story, in different directions, for these four.