Final answer:
A Video game is the type of app not included in a productivity suite, whereas word processors, spreadsheets, and email clients are standard components.
Step-by-step explanation:
The type of app that would most likely not be found included in a productivity suite is a Video game (D). Productivity suites typically encompass a collection of software aimed at helping users produce work, such as documents, spreadsheets, and presentations. Common components of a productivity suite include a Word processor (A), a Spreadsheet (B), and an Email client (C). Video games are generally not included as they are designed for entertainment rather than productivity.