Mike Schinkel

NewClarity

This plugin does what it names says; it omits page templates from the parent theme from the template dropdown when you are editing a “Page” in the WordPress admin.

Omit Parent Theme Page Templates

Omits Parent Page Templates from the "Page" edit screen in the WordPress admin.

LCweb

Yes, <a href="https://be.elementor.com/visit/?bta=1930&brand=elementor" rel="nofollow ugc">Elementor</a> builder is absolutely great, but using its free version a major downside is evident: we have to edit each page singularly. This is quite a problem having to deal with many pages having identical elements (eg. sidebars, head, footer).
Templementor has been created to create a solution in the most simple and clean way:
<ol>
<li>
Create templates, as you would do creating a page through <a href="https://be.elementor.com/visit/?bta=1930&brand=elementor" rel="nofollow ugc">Elementor</a>. Obviously is possible to create completely new page layouts by using the “Elementor Canvas” wrapper template.
</li>
<li>
Insert the {{contents}} placeholder wherever you like in the template, preferably in an HTML block (continue reading to know more about placeholders)
</li>
<li>
Apply templates to any post (or post type) editable through <a href="https://be.elementor.com/visit/?bta=1930&brand=elementor" rel="nofollow ugc">Elementor</a>
</li>
</ol>
Page contents will be wrapped by your template. 
Did you apply the template to 100 pages?
Simply edit it to magically update any associated page! Isn’t it great?
Affected page will inherit also template page settings (eg. background and padding). 
You could theoretically build an entire site without a premium theme and maintain/update it in minutes!
Templates can also be applied to other templates. For example, two templates could have different head sections while keeping the same footer, without needing to edit the footer section for each head template. Sound complex? Is surely easier to be used than explained 😉
<h3>🪄 Placeholders</h3>
Placeholders are essentials in Templementor: replacing only page contents wouldn’t be such a great deal, isn’t it?
You can theoretically use unlimited placeholders to display posts data into templates:
<ul>
<li>{{contents}} – page contents</li>
<li>{{title}} – page’s title</li>
<li>{{author}} – page’s author (its nicename)</li>
<li>{{pub-date}} – page’s creation date (global date format used)</li>
<li>{{edit-date}} – page’s modification date (global date format used)</li>
<li>{{excerpt}} – page’s excerpt</li>
<li>{{comm-count}} – page comments count</li>
<li>{{POST-META-KEY-NAME}} – page’s custom field value</li>
</ul>
Obviously replace POST-META-KEY-NAME with the proper meta name. They are widely used by plugins to store data and you can use it into templates. You could also create them with the maximum ease through WP editor wizard.

Templementor – Persistent Elementor Templates

Makes Elementor even greater by creating chainable templates to shape-up and manage entire website areas in minutes

Omit Parent Theme Page Templates vs Templementor – Persistent Elementor Templates