Hi @pooya
You can make use of the get_field_objects() function to step through all the fields and display the ones that match your class like so:
<?php
$fields = get_field_objects();
if( $fields ): ?>
<ul>
<?php foreach( $fields as $field ): ?>
<?php if($field['wrapper']['class'] =='your_class'){
//do something here
} ?>
<?php endforeach; ?>
</ul>
<?php endif; ?>
