The following link points to a csv file containing data on real GDP per capita for about 107 countries from 1960 to the present:Penn World Table and included only countries that had data available for each year starting in 1960. The Python code used to construct the datasets and the figure is available from this Github repository.
The following links are to data files containing long-run average rates of money (M1) growth, CPI inflation, and real GDP growth for 178 countries:
The data files were constructed using data from the World Bank's World Development Indicators. The money supply measure is M1, the price level is the consumer price index, and national income is real GDP in constant 2005 US dollars. For each country with at least 10 overlapping continuous years of data for each series, the average annual growth rates in money, prices, and real GDP were computed. Programs for computing the datasets is available in this Github repository.
The World Bank classifies countries by income level. The World Bank classified countries in 2015 based on GNI per capita in 2013: