Sony 1st and 2nd party developers, which are your favorite developers

[insomniac17]

The only things I think you should add is Insomniac's FPS called Disruptor (for the PSOne), as well as the first three Spyro games (for the PSOne).

 

EDIT: I noticed a few more things that were pointed out by other posters, such as; Insomniac is second party, and Naughty Dog is first party.