Do most companies have a chief of staff?

ICYMI: Many companies have an executive director (chief of staff), but what that role entails can vary depending on the company's context. The chief of staff usually holds a position of responsibility and usually holds the position of vice president or, the larger the company, the higher the position in the hierarchy.
https://www.chiefofstaff.blog/do-most-companies-have-a-chief-of-staff