Chairman
The chairman leads a company's , the group elected by to oversee management and hold real power to hire and fire the CEO. The CEO runs the business day to day, while the chairman runs the board itself, setting its agenda and chairing its meetings. These are often two different people, even though it isn't always obvious from the outside that they aren't the same job.
Some companies combine both roles in one person, often the company's founder or a CEO who has been in place for many years. Others deliberately keep them separate. Separating the two is generally seen as a stronger check, since it's the chairman and the rest of the board who oversee the CEO and can remove them, and a board has a harder time holding its own CEO fully accountable when that same person is also running the board. This isn't an automatic red flag or green flag on its own, just a signal worth noticing when comparing how different companies are governed.
It's also common for a company's founder to keep the chairman title even after stepping back from running the company day to day, staying on the board while someone else takes over as CEO.