I have links within my frontmatter like this for my people notes and it’s very frustrating that these related notes don’t appear in the graph view.
Thankfully I have found success once I wrapped each reference with quotations like this:
This now appears to work as expected.
Not exactly what makes the difference but it’s nice to know I can make frontmatter work as I needed here. This is huge because I store a lot of details in the frontmatter so that my templates can remain pretty dynamic and I have some reporting/query capabilities.