The warmest pair I've ever had was a pair of Burton gloves that came with a removable liner. They were warm enough for Canadian riding 95% of the time, but every once in a while if my fingers got a little cold I'd throw the liners on inside the gloves.
Pretty sure these are the newer version of the ones I bought about 5 years ago. Gore-Tex® Glove | Burton Snowboards
The performance of these gloves actually got me looking to Burton the next time I bought hard goods!