@whburling

I apologize if the heated discussion with spillerbd is confusing or distracting you.
Back to your original question.

While the [Quick] Style Sets distributed with Word have a specific set of 25 styles, you can put as many as you wish in a custom [Quick] Style Set. They do need to be in the [Quick] Styles Gallery when you create a Style Set and will be in that Gallery when you use such a style set in a new document. This can get cluttered.

You can also use the Organizer to copy any styles from one document/template to another. You can do this with a macro if you want. See my page A Global StyleSheet in Microsoft Word? Doing this can allow you to create and import into other documents whatever styles you want with a single keyboard shortcut.

If you think you may have a need to dramatically change the look and feel of your documents explore Themes. Use Theme Fonts and Colors in your own styles to allow such changes. Avoid them if you want your styles hardened against such changes. If you need more on this feel free to write back.