The naming happened in June 2025, about two years after the research it rests on. Almost everything published since has been company engineering accounts rather than peer-reviewed work.
ResearchCompany or practitioner account
Sources, in order: arXiv:2307.03172; arXiv:2310.08560; rlancemartin.github.io; x.com/karpathy; arXiv:2507.13334; manus.im/blog; arXiv:2510.04618; Google Developers Blog; openai.com. Dates as published.