(I know that there is no explicit code to generate one of your page tables as a multi-column snippet in Google Search.)
In some examples of table snippets in SERPs I noticed that the pages use old-fashioned tables.
We have an AEM CMS, so responsive pages are built with components and our tables use FlexTable. I am guessing that Google doesn't see a table because it might be expecting a td to mark off a cell.
Has anyone seen a FlexTable come up as a Google snippet?