How Discord picks the author name and the url from a WordPress post?

When I haven't setup any Open Graph Meta Tags, how the Discord picks the author name (admin) and the author url from a post?

I have spent several hours to find this and nothing found. I inspected the code of the post and there is nothing about the author data in the source code.

Only one place found is in feed. But I don't think that the Discord is picking this from feed.

Anyone have an idea about th