Kingma is most notable for writing one of the most cited papers in AI. Actually one of the most cited scientific papers ever published, right up there with the transformers paper if not higher. "Adam: A Method for Stochastic Optimization" https://arxiv.org/abs/1412.6980

I remain astonished that Adam continues to be the most widely used optimizer in AI 10 years later. So many contenders have failed to replace it.