The Elion-Ant'elion are a group of Anthelians who were cut off from society and reverted to a state of
savage cannibalism.
The Andi were the first people to join the Mehl peacefully (in the myth)... their culture is vaguely defined as "warrior people that now fish... fiercely."
The Alrodrians are even less defined... they were the first real people to join Natopia. Alrodria was on Caplona and was... sort of... Roman-themed? Anyway the guy that founded Alrodria was ruler of Muckapucky for a long time so they all moved there when Natopia gave up Caplona.
Since I never made specific languages, these are all ethnic groups. I've always assumed they have their own languages, but everyone speaks the lingue franca of Natspeak.
Actually, about the Natspeak in Elwynn... I need to put a few clusters of Draconians in Iserdia since Luix Rakira is Draconian and moved there to be with distant relatives.... But yes, Mehl on this map is the "generic" Natopian person so the grey on the Elwynn map are Mehl people who speak Natspeak.
And then, said more in character:
I am excited for our son to begin his lessons once he is settled in Anmutstadt. I hope he becomes accustomed to splitting his time between here and Eliria. Since Nau has been made a Ziegish prince, he will be expected to speak Natspeak as a primary language. He will also be tutored in Haas to be able to speak it intelligently as a display of respect to the people. I know that Elwynn as many more laguages that you will be excited to teach him, so I wanted to keep his expected languages here to a minimum. Ziegeland is so homogenized that one really only needs to speak Natspeak. In regard to the cultural instruction, as is custom in Ziegish schools he will be taught to tolerate the Draconians, respect the Andi, and honor the Hazel.