Craftsman brand (like Carharts) clothes are my favorite, sadly due to Sears going away they are hard to find.
Their jackets actually have a warm layer in the hand pockets that keep your hands warm. They also have organization in the pockets, with little inner pockets to keep things organized.
They have two types of vest, one with a liner and one without. Both have amazing pocket organization with inner pockets to keep things separate.
Their pants are great too, with the right amount of pockets to be useful.
If you need to stay warm the Lester River Bushcraft Wool Boreal Shirt Anorak is amazing. Lot of pockets, and super warm. Their vest is awesome too. The only thing is the pockets they are nylon and poly cotton used to construct inside pockets.
Speaking of wool, I really love the used East German wool military pants, though they are hard to find these days.
I know it doesn't meet your requirements of all natural (they are made from tent material) but I really love the Fjallraven pants. They last a really long time, I have a pair that are over 5 yrs old, and the only damage is where I had a chainsaw winding down and it cut the thigh fabric a little though the pocket but not the leg. They also have coats and other stuff but I have no experience with them.