functions.php

<?php

/**
 * Register Blocks
 */
function be_register_blocks() {
		acf_register_block_type(
			[
				'title'           => __( 'Partners', 'cwp2021' ),
				'name'            => 'partners',
				'render_template' => 'partials/blocks/partners.php',
				'category'        => 'cultivatewp',
				'icon'            => cwp_icon( [ 'icon' => 'cultivatewp', 'group' => 'color', 'force' => true ] ),
				'mode'            => 'auto',
				'supports'        => [
					'align'           => false,
					'anchor'          => true,
					'customClassName' => true,
				],
			]
		);
  
}
add_action( 'acf/init', 'be_register_blocks' );

partners.php

<?php
/**
 * Partners Listing block
 *
 * @package      CultivateWP2022
 * @author       CultivateWP
 * @since        1.0.0
 * @license      GPL-2.0+
 **/

$classes = [ 'block-partners' ];
if ( ! empty( $block['className'] ) ) {
	$classes = array_merge( $classes, explode( ' ', $block['className'] ) );
}
if ( ! empty( $block['align'] ) ) {
	$classes[] = 'align' . $block['align'];
}
printf(
	'<div class="%s"%s>',
	esc_attr( join( ' ', $classes ) ),
	! empty( $block['anchor'] ) ? ' id="' . esc_attr( sanitize_title( $block['anchor'] ) ) . '"' : '',
);

$partners = get_field( 'partners' );
foreach( $partners as $partner ) {

  echo '<div class="partner">';
    echo '<a href="' . esc_url( $partner['url'] ) . '" aria-hidden="true" target="blank" rel="noopener noreferer">' . wp_get_attachment_image( $partner['image'], 'thumbnail' ) . '</a>';
    echo '<div>';
      echo '<p><a href="' . esc_url( $partner['url'] ) . '">' . esc_html( $partner['name'] ) . '</a></p>';
      if ( ! empty( $partner['title'] ) ) {
        echo '<p>' . esc_html( $partner['title'] ) . '</p>';
      }
    echo '</div>';
  echo '</div>';
}

echo '</div>';