I'm building a search results template and want to display the parent section of the website for each result returned. so at the bottom of each search result excerpt it'd say "Found in [section] | Reacd More"
For your custom post types and your blog, you can use get_post_type(). For your About parent page, if the pages only go one level deep, you can check
$post->post_parent to see if it's the about page. Otherwise, you can use get_post_ancestors() and check that array to see if your About page is in it!