I love thoughts like this, GC.
I've always loved thinking about truly unknowable facts. My basic example is this. There are an exact number of spiders living within a mile radius of me. No one can ever tabulate this number, but it DOES exist.
There are tons of such numbers and absolutes that exist that we will never know. The amount of information we will never know totally dwarfs the amount that we do know.
Your list includes lots of unknowable facts, how cool is that?
