https://www.wowhead.com/fr/news/maximillian-and-more-alliance-npcs-spotted-at-stormwinds-trading-post-330808
With these new npcs coming with the Trading Post, I hope we will see some jinyu in Stormwinds. They are in the the Alliance since MoP and they are still an allied of the Alliance in BfA (several jinyu can be found in Boralus Harbor in Boralus). We should have some of them in Stormwinds as all the other races of the Alliance.