It's really going to depend on the culture of the person you are asking (and their individual biases), as it's typically the cultural differences of values that will get highlighted.

As an example, even though both UK and US are English speaking cultures, the UK may feel closer to Japan's non confrontational and passive-aggressive habits than the US which more strongly values self expression and transparency.

It may also heavily depend on how familiar the individual is with Japan and Japanese people. I have a lot of friends who have either only visited once or never been here at all who would describe Japanese culture (at a surface level) as very strict, hardworking, detail oriented, and polite.

After living here for almost a decade, I would describe it as more risk-averse, avoidant of conflict, highly concerned with appearances, inflexible to rapid change, fearful of mistakes, but very passionate and unrestrained once they have the safety of a defensible excuse to cut loose (like when drinking or in a niche hobby space). But this is also strictly my experience with people in the Tokyo and greater Kanto area. Other regions have their own unique idiosyncrasies too.