I managed to replace author name from blog posts through the codes page, but after clicking “Back to News” where it shows the listing of blog posts, I would see the original user/author’s name for the same blog, where under the Blog section (in Home or specific blog post page) would only show the name I have replaced with.
I have replaced the author name in article-template.liquid and blog-template.liquid, but only works for blog posts and not “News” listing.