Display different information of a custom post type

Add categories to your custom posts. Ex:

add_action( 'init', 'create_gallery_taxonomies', 0 );

function create_gallery_taxonomies() {

    $labels = array(
        'name' => _x( 'B&A Categories', 'taxonomy general name' ),
        'singular_name' => _x( 'B&A', 'taxonomy singular name' ),
        'search_items' => __( 'Search B&A Categories' ),
        'all_items' => __( 'All B&A Categories' ),
        'parent_item' => __( 'Parent B&A Category' ),
        'parent_item_colon' => __( 'Parent B&A Category:' ),
        'edit_item' => __( 'Edit B&A Category' ),
        'update_item' => __( 'Update B&A Category' ),
        'add_new_item' => __( 'Add New B&A Category' ),
        'new_item_name' => __( 'New B&A Category Name' ),
        'menu_name' => __( 'B&A Categories' ),
    );

    $args = array(
        'hierarchical'      => true,
        'labels'            => $labels,
        'show_ui'           => true,
        'show_admin_column' => true,
        'query_var'         => true,
        'rewrite'           => array( 'slug' => 'gallery-categories' ),
    );

    register_taxonomy( 'gallery-categories', array( 'gallery_post' ), $args );

}

Check out that last line where it sais “gallery_post”, that would’be your custom post type.

Then you can add the parameter to the url, and display only the ones from your category

$gallery_slug = $_GET['parameter'];

$gallery_menu =  get_terms('gallery-categories', 'hide_empty=1');

foreach($gallery_menu as $item) {
    if( $item->slug == $gallery_slug ) {
        $current_cat = $item;
    }
}
if( !$current_cat )
    $current_cat = get_term(81, 'gallery-categories'); // DEFAULT CATEGORY TO SHOW


$args = array(
    'post_type' => 'gallery_post',
    'taxonomy' => $current_cat->taxonomy,
    'term' => $current_cat->slug,
    'posts_per_page' => -1,
    'nopaging' => true,
);
$query = new WP_Query( $args );

On the single template, you have to check which category the post has to show whatever info is needed.