Hi Community!  And specifically probably Denny?

Did Wikidata ever explore directly storing or having the ability to store weak/strong subclasses as in Prototype theory?

A Guppy is:
not typical of PET
typical of PET FISH
typical of FISH

Or was the decision to simply allow usage of all kinds of classification schemes and taxonomies simply through the direct use of introduced properties like SKOS:related etc. ?

It seems it was the latter?
But I couldn't find where some of those initial modeling decisions were made and written down.
Perhaps they never were written but only voiced by Denny and others in the early stages of design?
I poked around through Wikidata Events and even noticeboards, Project chat, etc. but could not find some of those very, very early design decisions.

It would be nice to have a place to look with a link to a page in the Community portal that says "History of Wikidata's design and early collected meetings, notes, design documents, recordings"

(Concept Disambiguation (Pseudo Sense Morphs) are my basis to understand more about some of the underpinning designs of the data model and knowledge organization, since I have tons of really great ideas forming.  With potential needs later on to do some strong concept mapping <-> sense in lots of ways, like classifier systems that borrow from computer vision research such as "shape dictionaries" against Abstract Wikipedia Renderers and Functions, with potential hints for Constructors, as it begins to be a realized part of knowledge exchange between communities)