In reply to tspoon1981:
I hadn't heard of that "...One Axe" guide, but it looks quite good from the contents.
Dan Bailey probably won't blow his own trumpet, but his "Scotland's Mountain Ridges" book has a few of the lower grade winter classics among a host of summer trips. There is probably overlap with that other newer One Axe book tho.
Other than that you have to pick and choose the lower offerings from the more substantial guidebooks, and the "All of Scotland" guides like that above don't give you all of the lower grade stuff, because they also want to include all the VI...VIII...X stuff! So I have the separate Cicerone Ben Nevis (and surrounds) and Cairngorm guides. Good pictures and topos, which is what you need if you want to find the correct lower grade routes amongst the VIs and Xs
https://www.needlesports.com/2606/products/winter-climbs--ben-nevis-and-gle...
https://www.needlesports.com/2881/products/winter-climbs-in-the-cairngorms....
There is also some good online stuff here:
http://scottishwinterroutes.com/