Buy some gloves that are not made for hunting, esp given the rifle hunt aspect of it.
There are plenty of snow skiing gloves that are awesome compared to their camo counterparts. Hestra, serius, many others.
Also, something to consider is a liner glove with a mitten over top. Lots of ways to skin this cat, but don't need to think only hunting lines for the answer.
All the gloves for Sitka, First lite, Kuiu etc are all exact same materials as most ski gloves. All use the same or similar technologies just broken out into different price points and temperatures.. also some of those gloves are just utility meaning protection(rocks, torns etc) more then for warmth
OP, what you want is just going to be a personal preference. Dexterity and warmth arent always synonymous.
I can tell you I normally carry two types. A fleece with a wind blocking layer and mittens(I have an array depending on the hunt. They range from: leather, goose down and wool).
Mittens I have and recommend :
mountain hardware absolute zero(light weight mountain hunts, they are $$$$)
giv’er frontier leather mittens (all around tough, warm and water proof- I also ski in these)
Cabelas standhunter (absolute warmest but very heavy and big enough to add hot pockets, these are my hunt fro
Tree, truck glassing gloves)
Mittens are very easy to take off