How to organize content structure and add links back to the index?

[Wonderer11]

I have been building my blog with this theme and want some help from the community before I move my content to hugo.

Target 1

I want to display the index content in the index page.

What I did

I have replace some code in "layouts_default\list.html" with {{ partial "article/article.html" . }}
Here is my edited layout https://github.com/Wonderer11/Wonderland/blob/main/layouts/_default/list.html
Here is my deployed page on github with my changed layout https://wonderer11.github.io/Wonderland/en/about/
I have to change the file name to _index.md so it will use the "layouts_default\list.html"

Problem

1. The index.md file layout seems to use "layouts_default\single.html" as the template, however, index.md should use a list template because it is a page bundle according to https://gohugo.io/content-management/page-bundles/ so I wonder if I miss anything.
2. I found that the license text in the pages using my changed "layouts_default\list.html" layout stands out because it had a different style than it was in the page using "layouts_default\single.html", I want to know how to fix it instead of hiding the copyright license.

Target 2

I want to add a link back to the content section index (index.md) in the content page (blog post) , how can I write a partial template that create a link direct to the section (index.md or _index.md) where the content page locate.

Thank you!