Good tier -
Eugen Systems(Best modern RTS maker to date)
Westwood(Grand daddy of RTS making will be missed forever <3 FUK EA)
Paradox
Interplay(Best maker of CRPGs)
TripWire
DICE(PRE BADCOMPANY days)
Sellout/Overrated Tier -
Valve(TF2 is overrated, you forgeted it up with hats and F2P. Also forget DOTA, didn't need as sequal)
Notch
Bohemia Interactive(Arma 3 development was stuffty)
DICE(BF3/BF4 is too casual)
stuff Tier-
Bethesda(You forgeted up Fallout , nothing you make comes from an original idea. Your games are overrated)
THQ(You use to make great RTS's, you forgeted up the formula with Company of Heroes)
Gear Box