do web searches for "evernote genealogy templates" and "onenote genealogy templates".
No idea which is best in this context, probably much of a muchness. But if I wanted to make use of Note Links to create hierarchies and networks I would look at OneNote first. The note linking abilities of EN and ON are functionally line-ball, but ON has a 'browserish' way of creating links to 'child' notes from within the 'parent' note; whereas in EN it is copy link from 'child' note, go to 'parent' note, and paste 'child link'
In a calibre Long Text (HTML) custom column you can put many links to just about anything - folders, files, EN and ON notes, web pages, email addresses etc.
I edit all metadata in the book list so I prefer this approach over creating Identifiers in L&F and maintaining the values in MDE.
BR