Next.js
Next.js can produce the cleanest server-rendered output on this list or the emptiest app shell, depending entirely on the rendering mode chosen per route.
Frameworks and Custom Builds
Where the rendering model is a decision somebody made rather than a default, and where structural findings usually trace back to that one decision.
Listings (4)
React Single-Page Applications
The classic structural case. If the content only exists after the bundle runs, the inspection sees what an AI retriever sees, which is nothing.
Static Site Generators
Astro, Hugo, Eleventy, Jekyll and their relatives produce plain HTML files, which is the best starting position on this list.
Custom PHP and Flat-File Builds
Complete control, no defaults, and every finding is a quick fix in the sense that you can reach the code. Whether anybody wrote that code is the question.