Well, yes, because the autonym is not in CLDR nor Names.php. The fact that it's not in CLDR is an upstream issue, while the fact that it's not in Names.php (yet) is because the language hasn't reached the translation threshold to be added there. The original bug you reported, the language names being shown as "English", has been solved.

In T255515#6227520, @Nikerabbit wrote:

It seems to be that it's falling back to https://meta.wikimedia.org/wiki/MediaWiki:Babel-0-n isntead of https://meta.wikimedia.org/wiki/MediaWiki:Babel-0. I think that if these messages are removed locally, fallback order may be restored.

In T255515#6226589, @Reedy wrote:

Isn't this literally because there's no translations for sma and smj in Babel?

So there's no way for MW to give them in those translations, as they don't exist

https://translatewiki.net/wiki/MediaWiki:Babel-1/sma etc

Det vi må tenke litt på er tekstene som skal være i høyremargen, hva det skal stå der og hvor de skal peke. Men det er jo uavhengig av selve designprosessen for øvrig.

@Susannaanas This has been completed, right?

As far as I can tell, this is done now.

As far as I can tell everything is done in this task, so closing.

Thanks for the reminder, @Aklapper.

@Aklapper No worries, there's absolutely no urgency to this, just a mild inconvenience. :-) But still wanted, yes.

Thanks for the reminder, @Aklapper! I don't think this task is valid anymore, so I'll just closing it.

Thank you very much, @Vgutierrez!

All done for labels and aliases.

I have a dataset of thousands of place names in Kven and Sámi languages that I'm hoping to add to Wikidata soon, and having the ability to add labels in Kven is quite important for that, IMO.

Added to the VE interface, but the templates still need TemplateData added.

Where do you mean? In labels in items like https://www.wikidata.org/wiki/Q2320 , or in date properties like born/died?

Not going to prioritize this.

Closing as declined because of complications.