Filtering articles in the panel based on language?

I have a site with 100+ articles that are mostly in Norwegian, but there are a few that are translated to English. It is starting to get quite painful to find the few articles that are translated to English in the panel. We are also planning translating more of the articles to English in the future. Is there a way of filtering the articles in the panel based on the currently selected language, that does not involve adding language metadata to all the articles?

I would prefer some method that uses the filename, ie. singlearticle.no.txt and singelarticle.en.txt, but as far as I can tell this is not possible.

Are there any ways of doing this that I have overlooked?

Not sure where you want to filter the pages, in the pages sections for the articles depending on translation language?

Yes, I want to filter the pages in the pages section based on the currently selected language. So if the currently selected language is English I want to return the articles that have an English translation.

Here is a screenshot of the pages section

Should work with a query, you could use a custom method that wraps the following code: Filter by language | Kirby CMS

Thank you.

Never used custom functions before.

Here is the implementation if someone needs to replicate.
Create a plugin folder with and index.php file in site/plugins

index.php

<?php

Kirby::plugin('utility/utility-functions', [
    'pageMethods' => [
        'translatedPages' => function () {


            $translatedPages = $this->children()->filter(
                fn ($child) => $child->translation(kirby()->language()->code())->exists()
            );
            return $translatedPages;
        }
    ]
]);

You can test the function in a page template with

 <?php $translatedPages = $page->translatedPages(); ?>

<pre>
    <?php
        dump($translatedPages);
    ?>
</pre>

And here is the query used in the blueprint

  query: page.translatedPages