Most of the time I just ride with insulated leather palm ragg wool gloves.
When it gets windy I wear a shell over them. The shells I'm using are from a pair of Black Diamond Soloist Alpine climbing gloves. The BD gloves are so far the only glove I've found so far where the shell part is just a shell so they work great for layering over my wool gloves when the inner glove is removed. If my hands do manage to sweat on a ride I can just switch wool gloves and move the shells over.
https://www.blackdiamondequipment.co...01691_cfg.html
Personally one piece gloves with synthetic insulation never seem to work for me. The light weight high loft insulation on the palm side goes flat when gripping the handlebars. At least wool has the bulk to avoid being squished completely flat.