In my idea, I believe that if a country has a currency that is of high value, it will increase her value also in global exchange making it to have more excess in exchange compared to the country with less value rate.
Exchange rate is just one of the metric that influences a country's value.
Economic strength depends on factors like GDP, productivity among others.
Like the list you gave, if a strong currency and exchange rate determines values
US and China wouldn't be among the biggest giants of a country.
I can't really start pointing out lots of things but higher currency has its own disadvantage to an economy
Hence why no country are explicitly pushing their currency to be super expensive.