If you look at their appearance they have typical outlines of elves: ears and grace in their movements. Sincerely I don't remember if and where I read it but they remind me elves. Anyway I wrote similar, not that they are elves.
I did't pay much attention but I don't remember some Yun or Gon child among NPCs, instead they are always Lyn or Jin. So it's possible Gon and Yun are somewhat related.
I don't see Lyn like an elf, mostly they remind me squirrels.
I haven't great knowledge about far east mythology but I think all races/species are linked to it.