https://i.redd.it/45ezt3j9hziy.png
Edit: Oh and I almost forgot (and to bring this full circle) a Googler saw my post about this and made an interactive version:
https://medium.com/@hoffa/reddit-favorite-sources-the-most-l...
Edit: and to really bring this full circle, this Googler made an interactive version about HN:
https://medium.com/@hoffa/hacker-news-on-bigquery-now-with-d...
So your graph is not very helpful unless you want to pretend the Washington Post and New York times are just leftist versions of Breitbart.
Honestly do not see the point or value in what you have done.
So, assuming that NYT and Politico are left-leaning, it would appear that the "right" sub links to its opponents' views, while the "left" sub does not.
The implications of this are left to the reader.
I mean, I guess if you consider Trump-supporting == "conservative" and Trump-critical == "liberal"
I'm not sure that's really true.