>Both graphs are necessary to understand the whole problem. The suggested one and this one. A third one with income distribution over the world would aso be good.

Exactly. People need to understand both relative (per capita) and absolute shares of emissions. They also need to understand, you cant compare things exactly 1:1, but that relative and absolute shares are useful to look at on national and income group basis.

After that one can ponder as to the reasons for discrepancies, often they are related to energy/economic trajectories. Countries with a lot of fossil fuels stand separately for example. Not the only, but maybe the biggest separator when it comes to relative shares. Then we have a lot of cultural factors.