I used to wear a Filson Double mac for deer hunting, but it’s a heavy sonfagun. If not hiking too far, it does make for some toasty stump-sitting; nothing quite feels the same. Fearsomely expensive these days.
I wear the Heck out of the matching Filson wool vest my wife bought me. Adds significant warmth, some pockets, and doesn’t restrict arm movement.
I also have a Bemidji wool jacket in blaze orange. Single-layer 30oz wool. Very nice for milder hunting weather and very quiet. About $250 IIRC
Costco merino wool socks are all I wear, year-round, except when out in very cold weather. Then I wear Realtree Merino wool boot socks. 80% (at least) Merino, over-the calf, made in USA just like the Costco ones. Amazon has them.
When cold enough for wool pants, I have some “German Wool Pants” that came from the old, good, Cabelas when they briefly sold surplus. Not sure if they’re military or other uniform items, but they have canvas pockets and suspender buttons. Before those, when I was thinner, I wore the WWII pants that match the Ike jackets. Paid like $10 for those long ago. If you can find some, they’re excellent.