10. CLAM
if you start including altcoins like CLAM in the list of altcoins that forked from bitcoin then the list will grow as big as nearly 700 coins since all of them forked from bitcoin one way or another. and you can even include secondary forks like the fork of forks (eg a fork that was created from LTC) then the number grows even bigger.
the difference between a fork and a crapcoin is this:
crapcoins made by copy/pasting bitcoin code without any innovation restart at block 0. retaining no transactional data.
however a fork retains historic transaction/block data upto a certain date before they go in their separate direction
all you can say is that forks can create crap coins but not all crapcoins are forks

otherwise there are a lot of exceptions to your forkcoin examples. there are forks such as "bitcoin new year" that didn't even survive long enough for people to know them. they are in fact crapcoins.
and about your last line i have to say a fork doesn't have to necessarily go in their "separate" direction. SegWit was a fork, so was P2SH fork in 2016 IIRC, and more. they didn't go their "separate" directions, they improved bitcoin by adding a new feature to it.