Playstation Have The Best Developers in These 4 Genres.

[Clyde32]

As far as #1 goes, I think Sakaguchi and Takahashi go pretty far on that one.

#2 is good. Though the two I'm thinking of are now producers.

#3 I think Harada and Sakurai Dominate

and #4 is obviously Kamiya.

It's all subjective though.