I live in canada and get around on a bike all year long, here's the state of my winter wardrobe after some years dialing it in:

• One simple, single-layer jacket.
• One cotton hoodie.
• One packable down jacket that I keep in my bag in case I get stuck in the cold for whatever reason, but in three or so years I've only used it when I was sitting for hours in the cold, never when I was actually moving/riding/working outside.
• One fleece jacket.
• One impermeable but uninsulated jacket that's big enough to fit over everything else. Don't really need this one in winter because it's too cold for rain.

I don't actually own a dedicated "winter coat", I just layer the above according to conditions, along with a scarf, wool hat and either mittens or thinner gloves.