WP RSS Aggregator by RebelCode is a free plugin for importing, merging, and displaying RSS feeds and Atom feeds anywhere on your site. There are paid for premium add-on’s
Import unlimited content from an unlimited number of sites.
Manage all your RSS feed sources from a single page.
Set all RSS feeds to fetch new content automatically.
Customise the display templates to match your website’s design.
Built-in shortcode and block to display your feeds in seconds.
RSS feed auto-discovery for sources with hard-to-find RSS feeds.
Import and display playable Youtube videos on your site.
Limit the RSS feed items stored and fetched for better performance.
Create a custom RSS feed from imported items to use elsewhere.
Extendable via action and filter hooks.