Thinking some more on Popper’s Three Worlds, here is a set of philosophical disciplines that seem to resonate with the themes of this blog.
- Phenomenology: the philosophical study or theory of phenomena as distinct from that of the nature of being
- Epistemology: the theory of knowledge, especially with regard to its methods, validity, and scope
- Ontology: the branch of metaphysics dealing with the nature of being
- Axiology: the philosophical study of the nature of value and valuation, and of the kinds of things that are valuable
I believe that one could also 
make a case for associations with phenomenology to the subjective, epistemology to the objective, ontology to the substantive, and axiology to the normative.
Further reading:
https://www.quora.com/What-does-ontology-epistemology-and-axiology-mean
http://cognitive-edge.com/blog/phenomenology-epistemology-ontology/
(Note that the author of the article above, David Snowden, is the creator of the Cynefin Framework.)
https://en.wikipedia.org/wiki/Phenomenology_(philosophy)
https://plato.stanford.edu/entries/phenomenology/
https://en.wikipedia.org/wiki/Epistemology
https://plato.stanford.edu/entries/epistemology/
https://en.wikipedia.org/wiki/Ontology
https://plato.stanford.edu/entries/logic-ontology/
https://en.wikipedia.org/wiki/Axiology
https://plato.stanford.edu/entries/value-theory/
https://equivalentexchange.wordpress.com/2015/05/14/four-philosophies/
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