I'd personally avoid ASRock B350's as they have some controls missing from the bios.
Other than that a B350 from ASUS/MSI/Gigbyte will do fine. You may need to ensure it has a new bios for it to work with Ryzen 2600.
Or alternatively for a few bucks more an X470 which will have the bios updated already. I'd suggest going in between for a B450 model, but they don't seem to be readily available at the moment.
I'd personally avoid ASRock B350's as they have some controls missing from the bios.
Other than that a B350 from ASUS/MSI/Gigbyte will do fine. You may need to ensure it has a new bios for it to work with Ryzen 2600.
Or alternatively for a few bucks more an X470 which will have the bios updated already. I'd suggest going in between for a B450 model, but they don't seem to be readily available at the moment.