> "the Racket community" is more-or-less analogous with "Matthias' academic descendants."

For people who don't know, the Racket project was started by Matthias Felleisen in the early '90s. The next people on the project were all his PhD students:

- Matthew Flatt

- Robby Findler

- Shriram Krishnamurthi

- Cormac Flanagan

Later additions who are top contributors to github.com/racket/racket:

- Sam Tobin-Hochstadt (Felleisen's student)

- Jay McCarthy (Krishnamurthi's student)

- Vincent St-Amour (Felleisen's student)

- Ryan Culpepper (Felleisen's student)

- Asumu Takikawa (Felleisen's student)

- Eric Dobson (Krishnamurthi's undergraduate student)

In the top 10 contributors listed on GitHub, only 2 are not academic descendants of Felleisen:

- Eli Barzilay

- Matthias Felleisen

EDIT: I originally listed Eric Dobson as "not an academic descendant of Felleisen" because I hadn't been able to find information on a dissertation or the like, but a comment informed me that they were an undergraduate student of Krishnamurthi so I have updated the comment to reflect this.