There isn't? My life is a lie! XD
Problem with text format communications... can't tell if joking or not. ¬_¬
But in answer to the original post: Pretty certain that Kroq-Gar survived, I believe he was last seen entering a temple-city that became a temple-ship.
Funnily enough, in one of the Age of Sigmar RPG adventure modules, it was strongly implied that Mazdamundi is alive. This was during the "Serephon are recreated by the memories of the Slann who summon them into existence" period, with the adventure being that a free-city had taken a golden plaque. Turned out that the plaque in question held a precious memory of the nearby Serephon enclave's slann. That memory being a much loved Stegadon. Probably only intended as a small easter-egg reference to Mazdamundi's prized stegadon, but at the time a fair few people were saying that it was proof that Mazadmundi is still kicking.
Oxyotl... Don't recall anything definitive one way or the other, but considering he survived a long period in the Realms of Chaos once before, it totally wouldn't surprise me if he survived the same way that Gotrek did, just going Doomslayer Skink in the Realms of Chaos before they finally managed to find a way to evict him,