The Skre Hardscrabble vest would be worth looking at.
I don’t have the vest but do have the Hardscrabble jacket. About as quiet as you can get without going full on fleece.
I wear a Sitka Flash pullover on top of a synthetic mid layer and merino base layer, while being active.
When stationary, I’ll add a 700 fill down jacket.
This system kept me warm, on multiple negative wind chill days, in Eastern Montana this past season.
Edit: On the coldest of days, I added...
Went once, about nine years ago. Haven’t really had the urge to go again.
Probably would be different if I had actually SEEN an elk on that trip.
At 48 years old, between hunting Mule deer and mountain Whitetails, I’m good.