I asked: Why does Finder.app Sort by Kind sort extensions in reverse order.
The answer was: Sort by Kind doesn't sort by extension. Fair enough.
The question answers the unexpected (to some) behavior of Sort by Kind
.
I then asked in a separate question how to perform what I had originally intended: Is it possible to sort by extension?
I provided a link in the former question to the latter,
so anyone expecting Sort by Kind
to sort by extension and learning it doesn't
will have a path to the answer of how to do it, and
anyone seeking an answer to the more general
Is it possible to sort by extension?
might find the answer contained in its own question.
The latter was marked duplicate, but they seem separable to me.