query {
  post(id: "cG9zdDox") {
    title
    link
    categories {
      nodes {
        name
      }
    }
  }
}

{
  data: {
    post: {
      title: "Hello World!"
      link: "http://site.com/hello-world"
      categories: {
        nodes: [
          {
            name: "sports"
          },
          {
            name: "crime"
          }
        ]
      }
    }
  }
}

<?php
$posts = new WP_Query( 
    array(
        'post_type' => 'post',
        'posts_per_page' => 4,
        'post_status' => 'publish'
    ) 
);

# Loop through the posts

<?php
# Author Data
$author = get_the_author();
$author_name = $author->display_name;
$avatar = get_avatar_data( $author->ID );
$avatar_url = $avatar->url;

# Site Info
$sites = wp_get_post_terms( 
    $post->ID, 'sites' 
);
$site_name = $sites[0]->name;
$site_link = get_term_meta( 
    $sites[0]->term_id, 
    'link', 
    true 
);

# Follow Link
$follow_link = your_follow_link_func();

# Title
$title = get_the_title();

# Featured Image
$img = get_the_post_thumbnail_url( 
    $post->ID, 
    array( 300 ) 
);

# Excerpt
$excerpt = get_the_excerpt();

# Posts

# Assumes follow link is a registered
# field on the post endpoint

HTTP GET 
/wp-json/wp/v2/posts?per_page=4

$posts.map((post) => {
    $title = post.title;
    $excerpt = post.excerpt;
    $follow = post.followLink;
});

# Authors

HTTP GET 
/wp-json/wp/v2/user/{posts[0].author}
/wp-json/wp/v2/user/{posts[1].author}
/wp-json/wp/v2/user/{posts[2].author}
/wp-json/wp/v2/user/{posts[3].author}
/wp-json/wp/v2/user/{posts[0].author}/avatar
/wp-json/wp/v2/user/{posts[1].author}/avatar
/wp-json/wp/v2/user/{posts[2].author}/avatar
/wp-json/wp/v2/user/{posts[3].author}/avatar

# Sites 

# Assumes REST API was customized to show
# The "Sites Custom Taxonomy" IDs on the 
# Post endpoint

HTTP GET 
/wp-json/wp/v2/site/{posts[0].sites[0]}
/wp-json/wp/v2/site/{posts[1].sites[0]}
/wp-json/wp/v2/site/{posts[2].sites[0]}
/wp-json/wp/v2/site/{posts[3].sites[0]}

# Featured Images

HTTP GET
/wp-json/wp/v2/media/{posts[2].featured_media}
/wp-json/wp/v2/media/{posts[3].featured_media}