Segment Posts on Author Pages by Language or Tag

We’ve been using the routes.yaml to create language hubs for content that has been translated, and created language specific tags to ensure that tag pages don’t become a mess of the same posts in different languages, but not sure how to accomplish a similar thing on the Author pages.

For authors who have posts that we have translated into 6 or 7 other languages, their page becomes a mess. Does anyone know if this is doable with the current architecture? Or if there is a creative workaround?