Opening a ticket here ass suggested on https://translatewiki.net/wiki/CLDR#Localised_language_names.
The name of Guianian Creole (gcr) in French is "créole guyanais" (https://fr.wikipedia.org/wiki/Cr%C3%A9ole_guyanais).
The name of Western Armenian (hyw) in French is "arménien occidental" (https://fr.wikipedia.org/wiki/Arm%C3%A9nien_occidental).
Currently, the names of the languages on the links from the french wikipedia to wikipedia in these languages is displayed in English. Please insert the French names above.
CLDR does not have names for these in English either
CLDR isn't able to translate all 7000+ language names, so it focuses on a subset.