Your post doesn't mention where you live. It makes a big difference.

I live in Minnesota. Leg warmers are next to useless as a niche item. Far better off to just get full length windproof pants or tights, and wear smartwool under them. Leg and arm warmers seem to have a rather narrow range of improving comfort.

For "warmer" day (above 15F) I wear a goretex helmet cover and a headband to cover the ears.

When it's colder a wear a full on windproof Balaclava, similar to this one:
https://www.eriksbikeshop.com/Bellwe...3E6495/Product

I'm not usually biking in severely cold weather, if I was I could put ski goggles over that and have no exposed skin at all.

A helmet cover and headband over the ears has worked for me in less extreme weather though.