HN keeps reinventing HN-flavored things.
I built this to aggregate all the aggregators (like HackerTube, Hackerbooks etc.) that were popular a few days ago (they go back to 2011, at least).
https://hackeragain.com
https://en.wikipedia.org/wiki/List_of_lists_of_lists
https://en.wikipedia.org/wiki/List_of_lists_of_lists