Can you link or tell us which specific page you are using as the "cosmetic" page of the wiki?
Because
if it is this one :
https://ddowiki.com/page/Cosmetic ?
Most of what is displayed on this page is named items from which a cosmetic can be created using the Mirror of Glamering; with the obvious exception of two links : Cosmetic Hats and Cosmetic Cloaks. Of course the cosmetic vendor will NOT have most of these^ as they are not official cosmetics but custom cosmetics made with the Mirror.
There is an older link to the no longer available Bound-to-item one-use cosmetic kits
https://ddowiki.com/page/Cosmetic_Armor_Kits. Some but not all of which were converted to the new BTA Glamered cosmetics available in the store and from Gold Daily Dice. And this old link is even missing some of the old kit styles such as Spider, Whorl, and Dragon Knight. The ones from Gold DD are supposedly ALL available from the Cosmetic Vendor in the Hall of Heroes
https://imgur.com/a/nIjDxCB. I'm afraid there are few links for the current DDO Store cosmetics
https://ddowiki.com/page/DDO_Store an outfit here, a robe there, some helms, the glowing eyes, standard hair dyes.
But that still leaves a plethora of cosmetic items scattered across various categories such as Events, Expansion Bundles, Hard Core prizes, Community Loot List, that all have to be searched manually... already knowing their name because there is NO SINGLE PAGE listing ALL cosmetics and their sources.