You can manually create a custom Gantt chart from scratch using the native Chart menu of PowerPoint. In its Chart menu, you can find several types of standard charts including line, bar, area, pie ...

Learn how to create an org chart (Organizational chart or Organogram) in Microsoft PowerPoint without using any external add-in service.

Therefore, using Excel to first create your charts and then importing them into PowerPoint allows you to create presentations with chart data that is more accurate.

How to Create Amazing PowerPoint Diagrams: Choose the Right Type of Diagram Begin by selecting the diagram type that best represents the data or process you want to illustrate.