As I answered in another question like this one I have the Terranova riding boots of Mountain Horse. They are nice because the sole is made of rubber and it covers most of the lower part of the foot so the leather doesn't get wet because of the water/mud/snow.
I hope it could help you ☺️
Love, LOVE, ❤️LOVE❤️ my Dublin Pinnacles! They are waterproof and plenty warm.
Muck boot are my favourite xx
Mountain horse's are extremely warm, but quite bulky
HKM has nice winter boots