What is the best way to approach this? Is the Kolibri Catalog an older / outdated version of Studio? I see that https://catalog.learningequality.org/ actually redirects to Studio, but we just want to make sure we are approaching this correctly.
The first link you shared, https://kolibri-catalog-en.learningequality.org/en/learn/#/library, displays most of the available English channels but not the complete list (as it needs to be updated). That page was intended to show just a sample of the content available in English viewable in Kolibri.