Interesting. "Top stories" are presented with three articles: one "From the Left", one "From the Center", and one "From the Right". For example, an update about the subject of this thread has articles from CNN, Reuters, and New York Post in those respective categories. Looks like the "top stories" are presented with a "headline roundup", presumably written by an AllSides person, which (judging from two examples) tends to say things like "Left-rated outlets were more likely to highlight [...]; Right-rated outlets featured [...]". There are also three general feeds of "News from the (Left|Center|Right)" in parallel at the bottom.

This seems at least like the type of experiment that would be worth trying.