Great post Ron! You make a lot of great points. I think you are spot on with your point on insecure leaders being guarded with information. I have seen this come across many ways. One of the most common is they are also very guarded when it comes to information about their team. They don't like people to look in on their teams, for fear of being picked apart.

The other common thing I see relates to how they build and develop teams. Insecure leaders don't invest in other people the same way as secure leaders do. They either feel threatened by it, or don't feel confident they bring any value. This also translates into how they hire and build their team. While a secure leader wants to surround themselves with people who are better than them, insecure leaders want to be the most knowledgeable, the most talented, and the one in control.