You could have the worktop to its own layer and turn that off so it isn't visible in your lower level views.
You can turn off the slabs cover fill or go into the Show on Stories setting and in custom change the fill display settings.
As you are working with an object rather than a building then you may benefit from using 3D Document from Plan for the various horizontal slices. 3D Documents may also help with your overall presentation with 3D axonometric views etc.
You can read more here...
https://helpcenter.graphisoft.com/user-guide-chapter/85107/#XREF_86790_3D_Document
Apple iMac Intel i9 / macOS Sonoma / AC27UKI (most recent builds.. if they work)