A family of Microsoft word processing software products for creating web, email, and print documents.
I know of no such document. Note that when you change themes, you may change styles automatically as a part of the theme. Themes are document-wide so no single document can show multiple themes.
Word contains a lot of styles, built-in. Because most of the styles are for special uses, it is unlikely that most users would care about them, so I will be surprised if you find what you want. The Styles Gallery was intended to do part of what you want.
You can also add your own custom styles.
I would recommend trying to decide what look you want and trying to find a theme and set of styles that help produce that look for you. Customize them to get just what you want.