For those unwilling to count; most categories are the same or differ by 1 person (today vs 1 year ago) except for management which is half the size it was 1 year ago. I am not a software dev or manager so I am unsure if this is just because those are the teams that got cut or if these were senior over-paid managers.
Today: https://www.mozilla.org/en-US/about/leadership/
One year ago: https://web.archive.org/web/20190923050403/https://www.mozil...
Two years ago: https://web.archive.org/web/20180923185143/https://www.mozil...
(Disclosure: I work for Mozilla)