Regardless of your choice, I encourage you to think in layers.

Thin long sleeve to wick sweat and in case you are sensitive to wool.

Wool for insulation and because it still works when wet.

Waterproof/windproof.

Ex in action: Good for working and various conditions.

1. Athletic long sleeve, possible with UV protection
2. Wool sweater, longsleeve, turtleneck, etc.
3. Waxed Carhartt, field jacket, leather coat, etc.

Pay attention to your wool. Please don't disregard it the second you thrift or buy something low quality or itchy. Good wool is the difference between 8,000,000 burning prickly pins and needles and soft luxurious warmth that can still work up until the dead or summer in which case you might need something thinner than your winter wools. Could still be wool though. At any rate, don't even just look into merino. And research washing instructions. I would just hang dry inside imo.

Either way, I've had hand made in Italy merino wool that is scratchy, and I've had undisclosed 90% wool 10% cotton or acrylic or whatever that isn't. Blends can be good for wool at times because it can help with longevity or its ability to take abuse. Even then, there's multiple types of wool from, from multiple areas in the world, of varying quality, even up to the point of production technique itself.

I believe the best is actually Australian and I can't remember the specific breed but it would be a great jumping in point to find the cliff notes. End of day, just get stuff you can try on or return, OR where it won't matter, like an overcoat. It's also worth noting I find that even cheaper wools I can adjust to over time, unless it's particularly bad.

Alternative: Good for "going out."

1. Short sleeve T
2. Waterproof Cycler's jacket (for wind/rain)
3. Wool overcoat (for toastiness)