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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Column Ordering For Elementor
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String Replacer
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Coupolic – Ultimate Bulk Coupon Generator for WooCommerce
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AI Deny
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Change Product Author For WooCommerce
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Responsive Media
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lamoud-Pregnancy-Calculator
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QODE Wishlist for WooCommerce
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Weer
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WP Menu Image
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Apache Status & Info
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Untappd WordPress Widget
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Carousel for Awesome Filterable Portfolio
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My Upload Images
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Cart Total Rounding
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Screen Sharing System
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Abandoned Contact Form 7
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WP REST API – Post Type Taxonomies
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Outdated Plugin Notifier
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Wp Tic-Tac-Toe