Altair's Robes from Revelations at Assassin's Creed: Brotherhood Nexus - Mods and community
I've remade Altair's Outfit for Bayek. As you can see, the steel bracer and the steel-things on his chest and his back have been turned into gold to fit the Medjay theme.
Assassin's Creed Mirage: How to Get Altair and Ezio's Outfits
Assassin's Creed Valhalla gets an Altaïr legacy outfit for Eivor - Polygon