im someone, who really takes the time to get the shiniest weapons and stuff. so i noticed the shield and weapons of the kings/queen of the 3 alliances especially high king emerics shield with the lionhead on.
but not only them. magesguild members like valaste and shalidor also wear some kind of legendary version of dunmer and nord staff. and sees all colors+other members of the fightersguild wear some rly impressive weapons and shield too.
atm i cant get you some ingame-images (server is down) but i will get some when servers are up again.
here the eso concept art for impressions (brown argonian-like shiled in the middle is sees-all-colors shield)