Manoj

For creating a copy of posts and pages while retaining all the styling, content, title, meta info and taxonomies.
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In Posts/Pages screen, you can click on ‘Copy As New Draft’ link below the post/page title: this will immediately create a copy and return to the page.
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In Posts/Pages screen, you can click on ‘Edit As New Draft’ link below the post/page title: this will create a copy and redirect to edit the page.
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In Edit Posts/Edit Pages screen, you can click on ‘Edit As New Draft’ link above ‘Publish’ button: this will create a copy and redirect to edit the page.
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Please Note: No any kind of settings needed.

AMS Post And Page Duplicator

Falcon Solutions

Duplicate page and post plugin provides functionality to creates a clone of page or posts. You can duplicate pages, posts and custom post by click and it will be saved as draft.
Duplicate page and post doesn’t have a lot of features that other plugins have, but it also is lightning fast by comparison.
How it works:
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<li>Activate the plugin through the ‘Plugins’ menu in WordPress.</li>
<li>Now go to all posts or all pages page on your dashboard.</li>
<li>Hover your cursor over any post or any page on dashboard section, you’ll see a “Duplicate” link.</li>
<li>After you click on “Duplicate” link, then duplicate post/page will be created and saved as draft, make the changes you wish and publish it.</li>
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Major features:
User can easily duplicate the posts, pages or the custom posts with single click. It saves user’s time to re-create the same post or page again.
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<li>Create a clone of particular page.</li>
<li>Create a clone of particular post.</li>
<li>Create a clone of particular custom post(CPT).</li>
<li>Option to select editor (Classic and Gutenberg)</li>
<li>Option to add Post Suffix.</li>
<li>Option to add custom text for duplicate link button.</li>
<li>Option to select Duplicate Posts Status.</li>
<li>Option to Redirect after click on Duplicate.</li>
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Duplicate Page and Post

Duplicate post, Duplicate page and Duplicate custom post or clone page and clone post.

AMS Post And Page Duplicator vs Duplicate Page and Post