I've learnt that gloves is a very personal thing, because it differs
a lot between individuals how well the circulation into the hands work, ie how easy you get cold hands.
I get cold hands easily, and I often work in quite cold temperatures. I never use gloves these days, I've tried a lot and even very expensive battery-heated gloves, but for me nothing beats mittens. Separating the fingers into separate pockets like gloves do make my hands cold, they need to be in a mitten to be able to keep warmth.
I use this type of mitten:
https://hestragloves.com/dress-gloves/intl/gloves/collection/wilson-mitt-man/100/that is a high quality leather mitten with fur lining. Wind proof of course which is very important to retain heat. The lining is thin enough so you can do surprisingly much with the mittens still on, I can do most camera adjustments. However, the idea is when you work from a tripod that you take them off for short periods of time when you need to do something very detailed. The body works like if the hands are exposed to the cold for a short time, enough to feel the cold but not enough to actually get cold, you get more circulation and the hands get warmer. I've learnt the on-off-on mitten technique by Swedish electricians working outside in the winter. I don't use glove liners, ie I have my bare hands in the mittens so when I take them off there's bare hands. I think that is best in general (keeps hands dry and warm inside the mitten, and maximum dexterity when mittens are removed), but as I use a metal camera it's a bit problematic, one needs to be careful not to touch the metal if it's very cold.
If you have warm enough hands so gloves actually work that is a better choice, but if you never seem to be able to get warm enough gloves I suggest to try mittens, and try if with our without liner works best.
