> If you asked me to predict what a quantitative economist would be using, it would be Python, followed by R, and maybe followed by Java or C, or something like that.

I've never heard of an economist using Java, and very few using C. Fortran is still quite popular in some areas.

Stata is extremely popular in some areas. GAUSS and Matlab in others (though GAUSS is declining for sure). R is quite popular, particularly since RStudio came along.