https://xkcd.com/927/ Just replace "Standards" with "Languages"
English is a piss simple language to learn that the vast majority is already speaking. No need to overthink here. Also if you look at the regulatory side: Eu Government Documents are already always available in all languages spoken in the EU. So any legal barrier is non existent
Yes +1 for Aegis! They have icon packs too to make the entries stand out more.