Thanks for sharing, now I understand the "Distributed" tag on the articles! Zulie Rane made a tutorial on how to see where articles were curated, did no tried yet, she wrote about it here:

How to Tell What Topics Your Medium Story Was Curated Into

Diving into the source code.

https://medium.com/zulie-writes/how-to-tell-what-topics-your-medium-story-was-curated-into-559b80352bc4