> Here's [1] the list of contributors to GNU. Note that it also includes past contributors.

For the curious, this list contains roughly[0] 242 names.

The number of maintainers is surely much smaller than the number of contributors, however.

[0]: More specifically, the `#content` `div` on that page contains exactly 242 `h4` elements, all of which appear to be names of past/current contributors

Not sure if that list is comprehensive. Neither Ludovic Courtes or John Wiegley are on it (and they are both signatories of the open letter).