donaldG2

This plugin uses the Repeater field of Advanced Custom Fields to add options for a Credit and Credit Link on each item in your Media Library. Currently this will only correlate and display for IMAGES on the front end. This does not support credits for .pdf files, .swf files, .doc files, etc.
Requires either <a href="http://www.advancedcustomfields.com/pro/" rel="nofollow ugc">Advanced Custom Fields Pro</a> or the <a href="http://www.advancedcustomfields.com/" rel="nofollow ugc">free version of ACF</a> with the <a href="http://www.advancedcustomfields.com/add-ons/repeater-field/" rel="nofollow ugc">Repeater Field</a> add-on.
I suggest using ACF Pro with this plugin.
ACF Fields are exported as a json file (for ACF Pro) in the ‘acf_exports’ directory of this plugin. 
ACF Pro allows you to import that json file if for some reason you’re having trouble getting the fields to load.
If you’re a developer there are functions available to you (see: <a href="http://dongaines.com/acf-media-credit/" rel="nofollow ugc">dongaines.com/acf-media-credit</a>)
In the ‘/inc/’ directory the fields have been exported as PHP to work w/ ACF Pro or ACF free
<h3>Functions</h3>
There are a handful of functions available for your use and there is more explanation given to them at <a href="http://dongaines.com/acf-media-credit/" rel="nofollow ugc">dongaines.com/acf-media-credit</a>. The functions available: 
 the_post_thumbnail_media_credit(); //does not require an attachment id 
 the_media_credit_html($attachment_id); //returns 
 the_media_credit($attachment_id); //echos the_media_credit_html(); 
 the_plain_media_credit($attachment_id); //outputs the most basic markup 
 print_r(get_media_credit($attachment_id)); //helpful for debugging
For images with a caption I’m filtering the caption shortcode, please do the same if you need to make a change: <code>add_filter( 'img_caption_shortcode', 'your_function_name', 10, 3 );</code>
Added filters: 
 add_filter(‘acf_media_credit_base_output’, ‘your_function_name’); //your_function_name($image_credit) 
 add_filter(‘acf_media_credit_div_class’, ‘your_function_name’); //your_function_name($media_credit_div_class)

ACF Media Credit

Adds an option to create as many media credit fields as needed for an image.

soliddigital

This plugin allows you to use ACF Repeater and ACF Relationship fields as data sources for Elementor’s Loop Grid widget.
Key Features:
<ul>
<li>New Data Sources: Adds “ACF Repeater” and “ACF Relationship” to the Source dropdown in the Loop Grid’s Query tab.</li>
<li>Use Repeater Data: Select any ACF Repeater field from the current post/page to power your Loop Grid.</li>
<li>Use Relationship Data: Select any ACF Relationship field to create a grid of related posts in your Loop Grid.</li>
<li>Repeater Sub-Field Tag: A dedicated dynamic tag to easily pull and display data (text, images, etc.) from any sub-field within your repeater.</li>
<li>Relationship Sub-Field Tag: A dynamic tag to display data from the related posts, such as the post title, content, featured image, and permalink.</li>
</ul>
<h3>Requirements</h3>
<ul>
<li>Elementor</li>
<li>Elementor Pro</li>
<li>Advanced Custom Fields Pro (The Repeater and Relationship fields are ACF Pro features)</li>
</ul>
<h3>Usage</h3>
1. Configure the Loop Grid
<ol>
<li>Add an Elementor Loop Grid widget to your page.</li>
<li>In the widget settings, go to the Query tab.</li>
<li>From the Source dropdown, select “ACF Repeater” or “ACF Relationship”.</li>
<li>A new dropdown will appear below the Source. Select the specific ACF field you wish to use as the data source for the grid.</li>
<li>Create or select a template for your loop item.</li>
</ol>
2. Displaying Data in Your Loop Template (ACF Repeater)
<ol>
<li>Edit the Elementor template you are using for your loop item.</li>
<li>Add any standard widget, such as a Heading, Text Editor, or Image widget.</li>
<li>Click the Dynamic Tags icon next to a field.</li>
<li>Scroll to the “ACF Connector” group and select the ACF Repeater Sub Field tag.</li>
<li>Click on the tag name again to open its settings.</li>
<li>In the Sub Field dropdown, select the specific sub-field you want to display. The fields are grouped by repeater name for clarity.</li>
</ol>
Note that the preview within the template will not display the sub-field data. This is expected behavior because no applicable preview data can be set in Elementor.
3. Displaying Data in Your Loop Template (ACF Relationship)
<ol>
<li>Edit the Elementor template you are using for your loop item.</li>
<li>Your template will be supplied with a standard WordPress Post object, so just create your template as you normally would.</li>
</ol>

Repeaters & Relationships Connector with ACF for Elementor

Connect Elementor Pro's Loop Grid to Advanced Custom Fields (ACF) Pro Repeater and Relationship fields.

ACF Media Credit vs Repeaters & Relationships Connector with ACF for Elementor