There are various types of management approaches and styles used in different organizations and contexts. While there may not be exactly 21 “common” types of management, here are 21 management approaches, styles, and concepts that are commonly discussed and implemented:

• Autocratic Management: In this style, the manager makes decisions unilaterally, with little or no input from employees.
• Democratic Management: Managers involve employees in decision-making and seek their input and feedback.
• Laissez-Faire Management: This style is characterized by minimal direct supervision, allowing employees a high degree of autonomy.
• Transactional Management: It focuses on maintaining order and compliance through a system of rewards and punishments.
• Transformational Management: Transformational leaders inspire and motivate their teams to achieve extraordinary results and embrace change.
• Strategic Management: Involves setting long-term goals and objectives and planning the steps to achieve them.
• Project Management: A specialized approach to manage temporary projects with specific goals, timelines, and resources.
• Risk Management: Focuses on identifying and mitigating risks that could impact an organization’s operations or projects.
• Change Management: Managing the process of implementing change within an organization
• Performance Management: Involves setting performance goals, monitoring progress, and providing feedback to improve individual or team performance.
• Crisis Management: Dealing with unexpected events or emergencies that can disrupt normal business operations
• Quality Management: Ensuring the quality of products or services through continuous improvement and quality control.
• Knowledge Management: Managing an organization’s intellectual capital and knowledge resources to enhance decision-making and innovation
• Human Resource Management (HRM): Focused on managing an organization’s workforce, including recruitment, training, and employee relations.
• Supply Chain Management: Managing the flow of goods, services, and information from suppliers to customers
• Financial Management: Managing an organization’s financial resources, including budgeting, forecasting, and financial analysis
• Operations Management: Focused on optimizing the production and delivery of goods and services
• Strategic Management: Involves setting long-term goals and objectives and planning the steps to achieve them.
• Customer Relationship Management (CRM): Focused on managing relationships with customers to enhance satisfaction and loyalty
• Time Management: Personal management of time and tasks to enhance productivity and efficiency
• Conflict Management: Managing conflicts and disputes within the organization to reach resolutions that benefit all parties

These are just a few of the many management approaches and styles that exist. The choice of the most suitable management style depends on various factors, including the organization’s goals, culture, and the specific challenges it faces. Managers often adapt and combine different management approaches to meet their organization’s unique needs.