These are styles that can be added through the tools and style dropdown in the rich text editor (Content blocks, other areas with a rich text editor like the content blocks')
Paragraph Copy Lorem Ipsum
Large Text
Larger Text
Small Text
Uppercase Text
Thin Text
Bold Text
QuotationCite
Separator
The button variants should only be used when a single button is needed and it doesn't need to be shared anywhere. These can be added through the "Link Style" dropdown under "More Options" when creating a link in the rich text editor.