If I understand well, you would like to add some additional code only on the homepage in latest posts mode?
Exactly. I would like to add hreflang and some other code only on the homepage of my blog. If I choose my homepage not to be the static page, but to show the latest posts (like here: https://i.imgur.com/RaHKeXr.png ), then my homepage is not visible in the “pages” menu in my wordpress admin centre and I cannot add any specific code to it. My only choice is to add the code site-wide or not at all.
Now it would be even better to be able to add specific code also in the specific category/tag or author. So if someone goes to example.com/author/John/ or example.com/categories/internet/, he is served a different code. I’m not sure if that is possible from a technical point of view though.
