NES, it's the first modern console as we know them to the point the template is still present now even if Nintendo ironically are using it, second is Gameboy as while G&W invented the portable market the GB defined it as we know it today, I'll put Switch third as it consolidates everything Nintendo has done prior into one platform.
DS gets a mention for a non gaming impact people aren't aware of, it's actually responsible for the smart phone down to even the execution of apps as a number of DS software were simple apps, DS was effectively a pseudo smart phone era that prepared people for the smartphone era. Steve Jobs picked up on this following the failed Apple and Motorola collab and felt a the touch interface would along with other tech enable a vision he had in mind starting with the iPod Touch.







