Yes and Yes. I tried several bulbs and the Sylvanias were the quietest, but still made some noise. Others seem to have a similar problem as evidenced here:
I’m excited that the Levitons have different settings for LED/CFL/Incandescent so will test that out tonight.
The site for the company that makes the GE dimmers (Jasco) does list some bulbs as compatible, but there are only a few of them. It’s certainly possible you just have ones that work with them.
I spent a good chunk of this weekend testing bulbs and looking at the compatibility lists on some of the sites. If you look at the compatibility lists, there are about a dozen listed on the Jasco site, hundred or so on the Leviton, and multiple hundreds for the Lutron C-L. If these still buzz I might need to change my hub to Wink and the dimmers to Lutron Caseta, but we will see…