It seems like there are some sort of consensus on nowiki for a list of prioritized languages in CLL. The last discussion to reach consensus is Wikipedia:Tinget#Ønskede språk, and before that Wikipedia:Tinget#Standardutvalg av språk i sidemargen and Wikipedia:Tinget#Standardutvalg av språk utfra prosjekt.
In no specific order, but as they were listed
- Norwegian Nynorsk (nn) 9/9
- Swedish language (sv) 9/9
- Danish language (da) 9/9
- Faroese language (fo) 7/9
- Icelandic language (is) 7/9
The list is still being updated, so numbers are changing.
If some order can be maintained, then Danish should probably be after Danish, as the list would then be descending on similarity with Norwegian Bokmål.
Hopefully this will curb some of the ongoing discussions about the missing links to other Scandinavian languages, like Wikipedia:Torget#Et bidrag til å gjøre nynorsk mindre synlig.
Note that the necessary functionality for this to work is now properly implemented as part of T138973.