Basically I'm looking for a tool where you can navigate to a node/entity or give it a node id and UUID and ask the module to show how the CRUD commands would look like.

Is there anything like that?

I am studying how to submit forms in the Selenium or Playright manner and when I followed a guide showing the curl equivalent of submitted forms I saw a lot of code related to the theme etc in the submission.

This is based on using the DevTools window in Chrome or Firefox and choosing the option that enables you to copy the form submission code. You can even choose to see how a curl submission looks.

Is there some other theme that would show the most minimal data, Stark, or even something more basic?