A function to return an array of gravity forms for a CMB2 select field.

gravity-form-cmb2-options.php

<?php
/**
 * Get an array of gravity forms.
 *
 * @since 1.0.0
 *
 * @return void
 */
function jdn_gf_options() {
	$form_array = array();
	
	// Gravity Form
	if ( class_exists( 'RGFormsModel' ) ) {
		$forms = RGFormsModel::get_forms( null, 'title' );
		if( !empty( $forms ) && is_array( $forms ) ) {
			foreach( $forms as $form ) {
				if( isset( $form->title, $form->id ) )
					$form_array[ $form->id ] = $form->title;
			}
		}
	}
	
	return $form_array;
}

Thanks for this! Saved me some time 👌