Who is nobody? At least a fourth of the worlds work force works for a faceless corporation. And the math on emissions is crystal clear, no one has any doubt about it, what are you talking about? USA and China. This obviously will have consequences to their customers, the kumbaya politics governments.
USA and China produce a lot of emissions in total, just because they have the biggest economies. You might want to look at emissions per capita or per dollar earned?
Otherwise you have to make judgement calls like whether you want to treat the EU as one or as many? (And treating the US as 50 individual states would also drop them in these absolute rankings.)