Just as an example, right now I am in an Indian city where there is some minimal public transport but a majority of people need their own vehicle to commute for most of their journeys. And it is not an unusual scenario for India, which contains more population than Europe and North America combined.
I don't think OP understands the meaning of the word globally
We can compare US to Japan, to Europe, perhaps to some parts of China but certainly not to India - it would be too much apples to cucumbers comparison.
Imagine that we but every country and their development index and their public transportation development index on a XY graph? Would US still stand out?
Let's assume that it does. Then we can say that US is a global outlier.
When comparing similarly wealthy countries the US is absolutely an outlier in this.
Because you said - "Thankfully the US is a major outlier in this aspect globally." "Globally" implies the entire world. Now why are you moving the goalposts? If you wanted to confine the discussion to the developed world, just call out US being an outlier in the developed world.
Public transit use:
https://vividmaps.com/public-transportation-in-the-united-st...
https://vividmaps.com/wp-content/uploads/2023/09/public-tran...
Population density:
https://www.axios.com/2023/10/28/americans-moving-map-2022-f...
https://www.axios.com/2023/01/31/cities-pandemic-moving-tren...
https://www.axios.com/2023/09/14/where-america-stands