I think these are new Lords, is anyone keeping a list of all the Gray Lords mentioned?
Codex used to, but that's out of date to November 2022, almost a year ago. Assuming she caught everything before then, from a comb of what came after, we have:
Hatalath: Grey Lord participant in Waystone project. Sometimes called the Wanderer, being more comfortable going out and about than his peers, but still out of date about things due to being too absorbed in research, just presumably less so than his peers.
Thanan brothers: A pair of brothers
Sarumar: Told Hatalath about the Dwarves messing with their Waystone network
Harathi: Marrisith's great-great-uncle. Son of Morelion (first son of Aenarion), (presumably younger) brother to Maruviel (first queen of Laurelorn and handmaiden to the Everqueen Yvraine, who was also her aunt). Got exiled after the Sundering because of his heritage and because he was a teenager with no political power or allies at the time. Still salty about the whole thing. Marrisith doesn't like dealing with him
Turuquar: Metallurgist who got banished after his obsession with the origins of ithilmar led to him repeatedly trying to sneak into Vaul's Anvil. Also worked on an impractical golden dome for the capstone replacement
Mal: Worked on impractical capstone replacement with Turuquar. Wouldn't be dissuaded despite it not working well
Elrithish: Worked on the Stone Flower with Seilph. Later recreated magic storage mechanism for Waystone foundation with Hatalath, though in a more awkward fashion than the original creators presumably used.
Seilph: Worked on the Stone Flower with Elrithish
Skathrai: Worked with Yngra on Waystone foundation orbital mechanism. Has a history of creating things for military use, and understands the need to keep things simple for mass production. More willing to work on dryad-binding than Eonir are comfortable with (considering how dryads are citizens and allies of Laurelorn)
Yngra: Worked with Skathrai on Waystone foundation orbital mechanism. Has a history of creating things for military use, and understands the need to keep things simple for mass production.
???: The twelfth Grey Lord, who we still haven't heard about. This is assuming that neither of the Thanan brothers are also one of the other names mentioned, since we have no clue what's a first or last name.