Provide a detailed description of the management styles that this company has experienced throughout its history or throughout a specific period of time. For example: "Twitter had a CEO with an aggressive management style which instilled a culture of fear from this period to this period. After the new CEO took over (Elon Musk), the management style became more modern and the culture has relaxed due to this change." Analyze these leaders and why they lead/manage the way that they do.