I like the terms "Page Layout" and "Page Sections" for these items.

The word "patterns" is continually confusing to most clients. I've found that users think of checkerboard patterns, tiled patterns, decorative patterns. Even after I tell them what patterns are, they forget by the following week.

Meanwhile "Layout" is more familiar term for most office workers, as it's often heard when they are dealing with PDFs, Brochures, and such.

A Google search for "define: patterns" versus a search for "define: Layout" brings expected definitions and reinforces my point that Gutenberg page layout presets should be called "Page Layouts" to aid understanding and acceptance by general non-technical users.