Is there any way to number Paragraphs rendered so as to have a numbered list rendered?
I’d take a look at overriding the paragraph template file in your theme and doing the work there. Paragraph’s uses the following template names:


paragraphs-item--[VIEW-MODE].tpl.php
paragraphs-item--[BUNDLE-NAME].tpl.php
paragraphs-item--[BUNDLE-NAME]--[VIEW-MODE].tpl.php


The source code of the paragraphs-items.tpl.php is as follows:

&lt;?php

/**
 * @file
 * Default theme implementation for a single paragraph item.
 *
 * Available variables:
 * - $content: An array of content items. Use render($content) to print them
 *   all, or print a subset such as render($content['field_example']). Use
 *   hide($content['field_example']) to temporarily suppress the printing of a
 *   given element.
 * - $classes: String of classes that can be used to style contextually through
 *   CSS. It can be manipulated through the variable $classes_array from
 *   preprocess functions. By default the following classes are available, where
 *   the parts enclosed by {} are replaced by the appropriate values:
 *   - entity
 *   - entity-paragraphs-item
 *   - paragraphs-item-{bundle}
 *
 * Other variables:
 * - $classes_array: Array of html class attribute values. It is flattened   into
 *   a string within the variable $classes.
 *
 * @see template_preprocess()
 * @see template_preprocess_entity()
 * @see template_process()
 */
?&gt;
&lt;div class="&lt;?php print $classes; ?&gt;"&lt;?php print $attributes; ?&gt;&gt;
  &lt;div class="content"&lt;?php print $content_attributes; ?&gt;&gt;
    &lt;?php print render($content); ?&gt;
  &lt;/div&gt;
&lt;/div&gt;


You could use a preprocess hook to set an $attribute or other variable that would provide the Step identifier for the paragraph being rendered, although, I’d be suprised if you couldn’t figure that logic out at this level with data available on either $content or $attributes.