Answers to Questions by Yair Davidiy (16 November 2017, 27 Heshvan, 5778)
How many Jews are actually orthodox in the whole world?
https://www.quora.com/How-many-Jews-are-actually-orthodox-in-the-whole-world/answer/Yair-Davidiy
All Jews are Orthodox. Some are more observant than others. If they do not acknowledge themselves as Orthodox then they have a problem since being Orthodox defines the question.