I got it from the same source that Jim from c-town got his 35,000 from.
You do understand that the defining attribute is following the pope, not having the word catholic in their name?
You might define it that way, but that could be changing the standard of measurement. Would either Jim or you care to cite/confirm the standard used by our mutual source to arrive at 35,000?
The standard would have to be authority in teaching.
All of the Catholic Churches (the 23) teach what the pope teaches.
The old line Protestant denominations recognize some shared belief, dividing along lines of schism. I wouldn’t call the LCMS church in this town a separate denomination from the one the next town over.
But the standard “Bible-believing” church believes whatever the local pastor teaches. Until it doesn’t and they fire him.
Each is unique.