Languages of runeterra

So ive been poking around a bit after the release of arcane season 2s soundtrack, and i have found 3 references to Runeterran Languages, Shuriman in "To Ashes and Blood" where the chanting is a shuriman song to Janna, Freljordian in Volibears Theme, and a post i found where someone made a full translation of Ionian. With those 3 done, i cannot find any references made for the languages of Demacia, Bilgewater, Bandle City, the Shadow Isles (or blessed Isles if the language hasnt changed after the ruination) and Piltover/Zaun (arcane made everything english). As for Noxus i could only find what we have in their demonology texts and the new cinematic. Are there any references im missing or do we simply not have anything to work with lore wise. Riots ability to create fictional languages, almost from scratch, really fascinates me and i would love to see just how far it goes.