I use snowboarding gloves, the individual fingers type and not the mitten type. They are warm and allow for control (also somehow work on my camera touch screen). The brand i use is called roxy, i first got the for driving a car, but they are good for photography too. Those have been warm enough for pretty much any weather that the camera battery can stand. Wrist bands on the gloves are a big bonus as that way they don’t fall if i need to take them off for some reason