Fonts are not just text. A fonts is a visual statement just like a carefully chosen image and other graphic elements. However, when designing corporate presentations that need to travel outside the organization, using a unique font is risky, no matter how beautiful it is. Most fonts can’t be embedded in a template so they must be installed locally for anyone to use and see these fonts. And even if you choose to embed the font, you might not have the rights to distribute the font. Mac versions of PowerPoint cannot use embedded fonts at all.
So when creating templates for a large group of users, you should keep your presentation safe by choosing any of the 44 fonts that are most commonly installed* in different PowerPoint versions.
This Presentitude™ guide gives you an overview over these standard fonts, divided in three groups of font sheets: san serifs, serifs and script/display fonts. The guide is interactive – follow the instructions to move among the font sheets.
(* Based on the list of recommended fonts in Building PowerPoint Templates (2012, Que Publishing), by Julie Terberg & Echo Swinford)