FCI has 335 which has all the breeds AKC has .
But UKC has 166 some that both AKC and FCI dont have.
Such as Kangal, Akbash, American bulldog and hunting hounds, Chinook.
Other breeds not accepted by FCI yet is the Boerbel, and about 10 new or very rare LGD breeds.
I dont count any of the DOODLES_ yet the Lab-doodle is on the way down under -on becoming a self producing Pure bred . ( so ive heard).
So my guess would be just under 400 for breeds still in existance today or currently under development like the US Shiloh & King shepherd.