https://madnight.github.io/githut/#/pushes/
Checking here, if we go by pushes on GitHub, JS, Python, Ruby, Java, PHP are the top for 2021.
This is of course biased to only stuff on GitHu band public (assuming, but doubt they're publishing private data on BigQuery).
No idea how much of that is pet projects vs production of course.
According to 2022 Stack Overflow developer survey, if we exclude HTML, SQL and Bash, top five languages (as in being used by most developers) are: Javascript, Python, Typescript, Java and C#.