I have a little suggestion, my site use only static pages and my searchconsole in Google complain the lack of author, published and updated fields in the hatom/entry tag, I solved putting the following in the content-page.php after entry-title:
In general, pages don’t usually have a visible author name. If I were to add this in the next update, I would probably get quite a few angry people asking me why their author name was all of sudden showing on their pages.
Those three fields (author, published date and modified date) are typically only present on blog posts – GP does add them there by default.
Of course, as long as you added the above code into your child theme, it will work perfectly for you going forward, even if you update GP 🙂