Winter Riding Gloves/Mittens (20F, raynaud’s syndrome)

Hi all! I need help figuring out gloves for winter riding/tacking up!
ive seen a few other threads about this but none were specific to my circumstances.. so I figured I’d start my own.
so I ride English/jumping, so I need to be able to handle the reins and small tack fairly easily, and with my gelding I need to shorten and extend reins pretty regularly.
i also (yay) raynaud’s syndrome, thankfully pretty minor, but my hands get cold pretty easy.
i ride down to like 20F, and we have an indoor so it’s not wet or anything, but waterproof is always a plus

has anyone tried heated glove liners? I like hand warmers but doesn’t really help my fingers.. they don’t need to last more than like 3 hourse at the most, an hour or two at the least..