If you are shopping in the US, you won't find the same brands as here I think. Well you might find Fjällräven or Haglöfs, but there are less expensive brands that are just as good. Brands like, Didrikssons, Tenson, McKiinley etc. But there are looots of other brands, I like Icebreaker, for inner and middle layers, but there are for sure less expensive brands.
But, visit an outdoors oriented sports store, and ask for advice there, or visit the website of one.
Wool is good for inner and middle layers when it is cold.
If your jacket is less thick, then instead you need to wear warmer layers under it, and be more flexible, and be able to use the stuff in less bister climates also.