With the Relative Posts plugin widget you can show up on the sidebar a list of related articles with or without thumbnails very easy.
More Plugins
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Duplicate Page or Post, Delete Revisions and Enable Classic Editor
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WP Logout Redirect
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SS Font Awesome Icon
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Screen Sharing System
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WP Videos
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Automated DPD Shipping – HPOS supported
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EP Exporter for Contact Form 7 (CF7)
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Auto Login After Registration
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Arvandec Mellat Bank Gateway for WooCommerce
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Dynamic Links
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Dashboard Social Stats
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AutoPost AI
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View Transitions
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3D Viewer Block – Interactive 3D Model Display
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Instructables
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URL ShortCodes
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Auto LLMS (.txt) Generator
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Buooy Aviary Editor
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mzz-stat
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mk Simple Backups