We can't access the usages of the styles nor layouts so far. It would be practical for website management to know which styles are or are not used.
I created relevant tables.
Code review
I created new 'usage' pages for each style and each layout that lists all usages of the given style/layout. There is one line per Node or Taxonomy Term or any other entity, and then a column with in which type of paragraph it is used, and then the last column for the number of occurrences of this paragraph type with this style on the entity.
There is also an added column with the links to those subpages in the style and layout overview
Needs review
1.0
User interface
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It's likely this issue predates Contrib.social: some issue and comment data are missing.