Elementor is the more common of the two in our index: it runs on 1,162 websites against 26 for Embed Optimizer, and 3 sites use both. Counts come from real scans, not vendor claims.
Elementor is a website builder platform for professionals on WordPress.
Performance plugin from the WordPress Performance Team, which optimizes embeds by lazy loading them only as they come into view.
3 sites run both Elementor and Embed Optimizer. That is 12% of the sites using Embed Optimizer, the smaller of the two.
Want to know which one a particular site uses? Look it up and see its whole stack, or compare two sites side by side.