The “levels” you see when looking at your dashboard and “leadership scores” are simply your organization´s hierarchy. But depending on what kind of user you are you will see different things. As an HR user with admin rights, you will see a true representation of your organizations reporting relations, at level 1 will be the highest ranked leader (CEO) that are using the product, at level 2 you will find the leaders reporting to that leader and so on.
If you use Leadership Feedback as a leader (for your own leadership development), level 1 will be the leader reporting to you, level 2 will be the leaders reporting to them and so on. This means that different users will find different people on the levels, and not all users will have access to all levels (you will never see the levels above you in the hierarchy if you are not an HR admin user or the highest ranked leader).