I use Swix lobster gloves. Made for aerobic-sweaty activities. Good insulation over the back of the hand with thinner insulation on the palm and inside of fingers for dexterity. They keep my hands warm in 10°F or above for my 80 minute commute in Colorado.

Stay away from leather if you want to periodically wash your gloves/mittens. I recommend removable liners for quicker drying and easier cleaning if you go with a ski glove.