Taxonomy! That was the magic word I needed, not ontology.
Fundamental needs and experiences of human life
1.1 Physical health
1.1.1 Food and shelter
1.2 Social connection
1.2.1 Protection from external challenges
1.2.2 Protection from internal challenges
1.3 Play and imagination
1.3.1 Creativity and innovation
1.4 Change or transformation in human experience
1.4.1 Personal singularities
1.4.2 Fate of information after death