A family of Microsoft presentation graphics products that offer tools for creating presentations and adding graphic effects like multimedia objects and special effects with text.
Whenever possible, fonts should be set to the font theme. From the second screen shot in your first post, it looks like you've set the font theme to Calibri. Then, check that all placeholders in Slide Master view are set to Calibri Light (Headings) or Calibri (Body) in the font dropdown. The appearance of (Headings) or (Body) after the font name means they are using the font theme. In the future, if someone applies a different font theme, all those placeholders will automatically update to the new theme font.
Likewise, otherStyle should be set to theme fonts. Here's an example with the spec where the body theme font is set. +mn stands for minor, which is the body font of the theme. To set it to the heading font of the theme, it would read +mj (for major).
In your latest post, you show Arial being used, but that is for a bullet (buFont). That's a different case than text or tables. Some of PowerPoint's default bullet styles use Arial for the bullet font and you can get a different bullet size by changing that font setting. It's safe to leave those set to Arial.