I disagree with your methodology.

• Your research is based on public GitHub repositories, which means only open-source projects are included. Some of those might be related to programmers’ day jobs, but there are also lunch-break/weekday night projects in there (and I would argue it’s the majority of projects included).
• Stack Overflow data includes questions asked as part of people’s work for their company — their data is full of corporate Microsoft technologies.
• Furthermore, many of the languages listed have insignificant commit counts. 1450 is a very low limit, if you consider that there were 853394 JavaScript commits in the same dataset — and who has ever heard of “Web Ontology Language” before?

TOP 20 languages by total commit count
javascript          853394
html                802572
java                663885
css                 487693
python              440370
php                 278905
c++                 246132
shell               224794
c#                  212890
c                   201808
ruby                194842
objective-c          80385
swift                70243
viml                 68650
go                   54796
r                    42469
typescript           36679
tex                  36202
jupyter notebook     35295methodology: just added (weekday + weekend) to the original 2016 query and dropped the 1450 limit