Seems like a simple question until I considered my stable

My regular commuter (a CX bike) is set up for foul weather with fenders and an IGH. It works well except on super snowy days when I'll ride my fat bike. I also ride a few other bikes for the commute just usually not in foul weather. BUT I've ridden all my bikes in very foul weather when NOT commuting. So yes, I have go to bikes for foul weather commutes. But at the same time, I'll ride any bike in foul weather.