By human beings. And he did not contribute to AI capable of contemplating human research like a human does, because no such AI exists yet. When it does exist (if ever), it will surely not consider this person or his hundred lab workers to have contributed to AI. It will consider them to have contributed to applied statistics.

Edit: I realized these comments might be very mean to you (assuming you're the lab director with the hundred workers). I should disclaim that what I say is something I assume is true about most people who gloat about their citation counts, but it's certainly not true about all such people, and might not be true about you. Myself, I'm a bit resentful because I'm so bad at the whole academic game, so that probably makes me quite biased.