Since you seem to want responses on kinds, I'll comment here.
The bible defines kind rather explicitly as that which contains within its seed the capability to bring forth its own offspring.
Can you provide a reference?
On reading your definition the first time, my reaction was that all creatures are the same kind. That's on the basis of common descent.
On my second reading I tried to read it a little more strictly. Doing that, it seems to me that "kind" refers only to a single family.
Perhaps the definition is just a little too vague if it can lead to such a range of interpretations.