How many aircraft "Types"?

How many "Types" have you flown?

Without mentioning any names, I have recently seen claims of having
flown
more than a thousand types. Are there a thousand types? Are there 1000
civilian types?

Maybe I'm looking at this wrong, if I fly a C-210, a T-210 and a P-210,
I consider them
all one type. They are all on one type certificate, right?

An astronaut bio I recently read claimed he had flown 56 types. I
believe it, he could
probably tell you the serial #'s. Although I haven't counted, in 35 years
I've probably
flown dozens.

Statistically, if you HAD flown 1,000 types, have you flown half of the
aircraft types ever flown? 1/4?

I guess we could limit it to production types, but that would rule out
Crossfield and Yeager
and others who probably got exposed to more types than "average". I think
that this fellow never
flew military active duty, so that should limit it somewhat.

We should definitely rule out any simulator time.

AL G