Built with HTML5, performance and accessibility in mind, WS Form Lite is definitely worth a closer look.
Search post, pages and custom post types, using this highly configurable live search plugin.
A form builder with a decent set of features in the free version, a modern interface, and an option to grow.
Create individual sidebars or widget areas for different types of content, making aside content more relevant.
Add 'nofollow' or 'sponsored' to external links automatically to avoid being penalized by search engines.
Show images, galleries and videos in a lightbox with minimum effort and possible improved privacy.
Another form builder with good Gutenberg support, build in style editor and focus on performance.
With Related Posts by Taxonomy, you can add related posts to a sidebar, widget area or footer, using shortcodes and hooks.