Standard WordPress Custom Loop

loop__wordpress__posts.php

<section class="page-loop easybib-guides-loop">
	<div class="container">
	<?php
	// WP_Query arguments
	$paged = ( get_query_var( 'paged' ) ) ? get_query_var( 'paged' ) : 1;

	$args = array(
		'paged' => $paged,
		'posts_per_page' => 10,	
		'post_type' => array( 'post' ),
		'post_status' => array( 'publish' ),
	);
	$query = new WP_Query( $args );

	// The Loop
	if ( $query->have_posts() ) :
		while ( $query->have_posts() ) :
			$query->the_post(); 
			
			?>
				<div class="post__type_post">
					<a class="post__type_post_image" href="<?php echo get_the_permalink(); ?>">
						<img src="<?php echo get_the_post_thumbnail_url( get_the_ID(),'full' ); ?>">
					</a>
					<a class="post__type_post_title__link" href="<?php echo get_the_permalink(); ?>">
						<h2 class="post__type_post_title"><?php echo get_the_title(); ?></h2>
					</a>
					<div class="post__type_post_meta">
						<a class="post__type_post_date"><?php echo date('Y-m-d', strtotime( get_the_date() )); ?></p>
						<a class="post__type_post_author" href="<?php echo esc_url( get_author_posts_url( get_the_author_meta( 'ID' ) ) ); ?>" title="<?php echo esc_attr( get_the_author() ); ?>"><?php the_author(); ?></a>
						<div class="post__type_post_terms"> 
						<?php 
						$cats = get_the_category();
						if (is_array($cats)) : $count = count($cats); $count = $count - 1;
							foreach ( $cats as $key => $cat ): ?>
								<a href="<?php echo get_category_link($cat->cat_ID); ?>"><?php echo $cat->name; ?></a>
								<?php if ($count != 0 && $key != $count) : echo ' / '; endif; 
							endforeach; 
						endif; ?>
						</div>						
					</div>
					<p class="post__type_post_excerpt"><?php echo get_the_excerpt(); ?> ...</p>
					<a class="post__type_post_readmore" href="<?php echo get_the_permalink(); ?>">Learn More</a>
				</div>

			<?php 
		endwhile; // END while $query->have_posts()	

		/* this is for getting the last post number */
		if ( get_query_var( 'paged' ) ) {
			$current_page = get_query_var( 'paged' );
		} else {
			$current_page = 1;
		}
		$permalink_structure = get_option( 'permalink_structure' );
		$format = empty( $permalink_structure ) ? '&page=%#%' : 'page/%#%/';
		?>

		<div class="pagination">
			<?php echo
			paginate_links( array(
				'total'        => $query->max_num_pages,
				'current'   => $current_page,
				'prev_text' => '&laquo; ' . __( 'Prev' ),
				'next_text'     => __( 'Next' ) . ' &raquo;',
				'base'          => add_query_arg( 'paged', '%#%' ),
				'format'    => $format,
			) ); ?>
		</div>

	<?php // END $query->have_posts()
	endif; ?>

	<?php // Restore original Post Data
	wp_reset_postdata(); ?>
	</div>	
</section>

loop__wordpress__posts__category_query.php

<?php 

$news_header = 'Text'
$news_items = '1, 2, 3';

/*
To show specific items - posts, pages, events, or other post types - enter comma separated list of post or page IDs. (EG: "3718, 3592, 3584" ) 

To show most recent posts within a Post Category, enter a comma separated list of Post Category Slugs. (EG: "icc, news, campaign-update" )

You may not combine query strategies (either all ids or all categories).
*/
?>


<?php if ($news_header != ''): ?>
	<h2><?php echo $news_header; ?></h2>
<?php endif; ?>

<?php if ($news_items != ''): ?>

	<?php
	$query_type = '';
	$post_type = '';
	$post_in = '';
	$tax_query = '';		

	$news_items_string = str_replace( ' ', '', $news_items );			
	$news_items = explode( ',', $news_items_string );

	foreach ( $news_items as $item ):

		$intval_item = intval($item);				

		// if there are words passed into the field, they'll return Zeros
		// so we do tax query
		if( $intval_item == 0 ):
			$query_type = 'tax_query';

		// if they do not return zeros, we do post__in
		// or ID Query
		else:
			$query_type = 'id_query';
			
		endif;
	endforeach;

	$args = array(
		'post_status' => 'publish',
		'posts_per_page' => 3,				
	);

	if($query_type == 'tax_query'):
		$args['post_type'] = 'post';								
		$args['category_name'] = $news_items_string;	
	else: 				
		$args['post_type'] = 'any';								
		$args['post__in'] = $news_items;
	endif;			
	?>


	<div class="news-posts">
	
		<?php
		$query = new WP_Query( $args );	
		
		$c = 0;								
		if ( $query->have_posts() ) { 
			while ( $query->have_posts() ) { 
				$query->the_post();	
				$c++;

				$permalink = get_the_permalink( $post->ID );
				$image = get_the_post_thumbnail( $post->ID, 'full', array( 'class' => 'object-fit-image' ));
				$title = get_the_title( $post->ID );
				$excerpt = bpm_get_the_excerpt( $post->ID );

				$first = '';													
				if ( $c == 1 || $c == 4 || $c == 7 || $c == 10 || $c == 13 || $c == 16 || $c == 19 ) {
					$first = ' first';
				}
				?>

				<div class="news-post one-third'.$first.'">
					<div>
						<div class="mb35">'.$image.'</div>
						<h4 class="center font-black uppercase mb35">'.$title.'</h4>
						<p class="center font-black mb35">'.$excerpt.'</p>
						<div class="bcontainer"><a class="bb-button center " href="'.$permalink.'">read more</a></div>									
					</div>
				</div>	
			
		<?php } } ?>
			
	</div>
	
	<?php wp_reset_postdata(); ?>

<?php endif; ?>

loop__wordpress__posts__shortcode.php

<?php
add_shortcode( 'post_shortcode', 'bpm__content__post_shortcode' );
function bpm__content__post_shortcode($atts, $content = null) {

	$a = shortcode_atts( array( 
	'class' => '',
	'cat' => '',
	), $atts );

	// 
	$classes='post ';
	if($atts['class'] != '') {
	$classes .= $atts['class'];
	}

	// 
	$cat='';
	if($atts['cat'] != '') {
	$cat = $atts['cat'];
	}

	ob_start();   
	?>
		
	<section class="post-loop">
		<div class="container">
	
		<?php
		// WP_Query arguments
		$paged = ( get_query_var( 'paged' ) ) ? get_query_var( 'paged' ) : 1;

		$args = array(
			'paged' => $paged,
			'posts_per_page' => 10,	
			'post_type' => array( 'post' ),
			'post_status' => array( 'publish' ),
		);
		$query = new WP_Query( $args );

		// The Loop
		if ( $query->have_posts() ) :
			while ( $query->have_posts() ) :
				$query->the_post(); 
			
				?>
					<div class="post__type_post">
						<a class="post__type_post_image" href="<?php echo get_the_permalink(); ?>">
							<img src="<?php echo get_the_post_thumbnail_url( get_the_ID(),'full' ); ?>">
						</a>
						<a class="post__type_post_title__link" href="<?php echo get_the_permalink(); ?>">
							<h2 class="post__type_post_title"><?php echo get_the_title(); ?></h2>
						</a>
						<div class="post__type_post_meta">
							<a class="post__type_post_date"><?php echo date('Y-m-d', strtotime( get_the_date() )); ?></p>
							<a class="post__type_post_author" href="<?php echo esc_url( get_author_posts_url( get_the_author_meta( 'ID' ) ) ); ?>" title="<?php echo esc_attr( get_the_author() ); ?>"><?php the_author(); ?></a>
							<div class="post__type_post_terms"> 
							<?php 
							$cats = get_the_category();
							if (is_array($cats)) : $count = count($cats); $count = $count - 1;
								foreach ( $cats as $key => $cat ): ?>
									<a href="<?php echo get_category_link($cat->cat_ID); ?>"><?php echo $cat->name; ?></a>
									<?php if ($count != 0 && $key != $count) : echo ' / '; endif; 
								endforeach; 
							endif; ?>
							</div>						
						</div>
						<p class="post__type_post_excerpt"><?php echo get_the_excerpt(); ?> ...</p>
						<a class="post__type_post_readmore" href="<?php echo get_the_permalink(); ?>">Learn More</a>
					</div>

				<?php 
			endwhile; // END while $query->have_posts()	

			/* this is for getting the last post number */
			if ( get_query_var( 'paged' ) ) {
				$current_page = get_query_var( 'paged' );
			} else {
				$current_page = 1;
			}
			$permalink_structure = get_option( 'permalink_structure' );
			$format = empty( $permalink_structure ) ? '&page=%#%' : 'page/%#%/';
			?>

			<div class="pagination">
				<?php echo
				paginate_links( array(
					'total' => $query->max_num_pages,
					'current' => $current_page,
					'prev_text' => '&laquo; ' . __( 'Prev' ),
					'next_text' => __( 'Next' ) . ' &raquo;',
					'base' => add_query_arg( 'paged', '%#%' ),
					'format' => $format,
				) ); ?>
			</div>

		<?php // END $query->have_posts()
		endif; ?>

		<?php // Restore original Post Data
		wp_reset_postdata(); ?>
		</div>	
	</section>

    <?php
    $output_string = ob_get_contents();
    ob_end_clean();

    return $output_string;  
}
?>