But how much are "lifestyle consumption emissions" compared to total emissions? I have never seen the term before, so I cannot put it in context.

What I imagine:

• if a poor person heats 30 square meters, and a rich person heats 3000 square meters, that is a lifestyle-related emission, and will differ considerably
• if a poor person drives a car, but a rich person drives a luxury car, emissions will differ, but not considerably (the poor person's car is old, while the rich person's car has engine volume like a truck), but if the poor person has no car, emissions will differ considerably
• however, if the rich person takes a plane ride every week, and the poor person twice per year or once per decade, that will differ considerably
• both persons will need to eat, but if the rich person eats fancy food, maybe the transport, packaging and other factors add up to make a considerable difference? or maybe not...

...etc. A breakdown of how would be nice to see.