The Pew report Diversity and Division in Advanced Economies by Laura Silver, Janell Fetterolf, and Aidan Connaughton (10/13/2021) has the U.S. is the top spot in a poll and not in a good way. The chart copied here from Pew has the U.S. at the top for conflict between political parties and even the second highest response from the U.S. would be third in the most common response.
Notably, however, in most societies racial and ethnic divisions are not seen as the most salient cleavage. Rather, in the majority of places surveyed, more people identify conflicts between people who support different political parties than conflicts between people with different ethnic or racial backgrounds. Political divisions are also seen as greater than the other two dimensions tested: between those with different religions and between urban and rural residents. (For more on the actual composition of each public surveyed on each of these dimensions, see Appendix A.)
The report has over 20 charts and rich context to discuss the quantitative results.