I’m not entirely sure what you mean by the “model section” — could you maybe rephrase the question or provide some additional context?
For what it’s worth, “Blog (Alternative)” is one of Twenty Twenty-Three’s “templates”. Its documentation says that it “provides a different way of displaying blog posts, in a list format with the date on the left and the post title on the right.”
To learn more about the “templates” concept, please refer to these docs.
Hope that helps!