Naughty Dog due to Uncharted 2
Rockstar Games by Grand Theft Auto III
Insomniac Games because of Ratchet & Clank: A Crack in Time
Infinity Ward thanks to Call of Duty 4: Modern Warfare
Ubisoft caused by Assassin's Creed II
I generally agree with most of your list. But i disagree that Insomniac's rise was with A Crack in Time. The series was just as good in the PS2 era and R&C3 is as good as any of the other games.
I also disagree with Ubisoft. I think you do them a disservice considering the Prince of Persia series is highly regarded.
OT, i would argue Square Enix lost their way after FF11/FF12.
Also Gran Turismo imo doesnt seem to have hit the highs after the PS2 games.
Also Sucker raised their game with Infamous (though maybe not at the very top tier of devs)
Media Molecule with LBP.