I already get the ring of stone and emergent shadow, they are in Telvanni Peninsula and Apocrypha maps. I doubt the source of the information, ring of stone i get from telvanni peninsula map and shadow from apocrypha maps, I believe they are only in that specific map. I prefer to believe the uesp version. https://en.uesp.net/wiki/Online:Apocryphal_WellRing of Stone is also from treasure map: https://eso-hub.com/en/antiquities/leads/ring-of-stone - The Arms of Glory lead hasn't been found yet as far as I know. But if 2 out of 3 are already from maps, it may just be the ultra rare map drop of the three.