I think your source [1] is directionally correct but very wrong on the numbers. (It's also a decade old, but that doesn't explain these errors.) For example, it says (last sentence) that Americans average 6 tons per person per year. It's actually around 15 [2]. Also, the densest urban cores have per household (and person) carbon emissions ~half the national average. Here's a recent NYT [3].

2. https://ourworldindata.org/co2/country/united-states?country...

3. https://www.nytimes.com/interactive/2022/12/13/climate/clima...