I’m currently writing a new function to better surface related notes for my minimalist org-roam v1 clone (see also here). The function collects all notes related to a given note to the second degree - the backlinks for the backlinks and the outgoing links mentioned by outgoing links. To use the image of a family, it considers all parents and grandparents as well as all children and grandchildren of a note. All links to a specific note are counted and the resulting list is ranked by frequency.
The results are really interesting (at least for me). This is a note and its backlinks:
This is the same note with org-similarity in the side-window:
And this is the same note with orgrr-related-notes
(the above teased function, not yet released):