PhD in Machine Learning, on O-1 based on research. EB1B got denied (I have enough accomplishments, company accomplishments excluded for weird reasons). O-1 up for renewal next year. 1. How often are O1 extensions approved? 2. Am working for the same company, which does not publish its research, does that hurt chances of extension? 3. How much harder is EB1A standard than EB1B?