The University of Alabama at Birmingham has the Consanguinity / Affinity chart (.pdf) shown below. It is used for illustrating what would count as familial Nepotism in their HR hiring policies.
It makes a reasonable checklist for Custom Filters. Are their Rules (or combinations of rules) that would let Gramps isolate a tier of Consanguinity or Affinity?
And maybe these charts would be good Christmas Tree feedback when engineering a Custom Filter for a Person (or filter results)?
A couple years ago, I keyed in a pseudonym example family tree for testing Custom Filters.
from H600 Project:
