I don’t know which one is better, but it seems to me that “core developer” is more used in the Python community. We even have a section called How to Become a Core Developer in the devguide
I also would prefer “core developer”. I think the “category” can stay as committer, but our “title” could be “CPython core developer” instead of “CPython committer”. Thanks.
Cool. That’s an easy change. But I haven’t seen an answer here yet, why do you think it’s a better term?
I never considered any of those two better or worse and “committer” is shorter which helps in the context of a title that is attached to your user name on a website like this.