User blog comment:Raven Giordano/Follower Armor/@comment-6881629-20150224173738

Myself i wouldn't give Lydia Stormcloak armor as she seems very loyal to Whiterun (which is neutral but leans towards the Empire) i tried Wolf Armor on her but didn't like it, i usually give my Carls Dragonbone as they are sworn to the Dragonborn. Markarth armor sound good for Cosnach theres not a lot of light armor i like for males only really Dawnguard and Cultist, for Jenassa you could try Chitin but i usually keep her in smithed Leather and a copper circlet (to match her face paint) as i think it looks better.

As for mods a good armor mod is Immersive Armors its mostly a mash-ups of the basic Skyrim armor it adds a lot of sets and blends in pretty well (mostly) there are a few in the set that i'd think might look good on the followers you mentioned (like Master Ranger or Forest Archer).