A block to add a gallery of images and/or YouTube/Vimeo-videos. Media can include a description. This plugin uses GLightbox and Splide under the hood.
Download the latest release and install like you would any other WordPress plugin. Make sure you allow inline SVG elements in your content.
Use outer block within themes: maxgruson/multimedia-gallery.
Use inner blocks within themes: maxgruson/multimedia-gallery-image and maxgruson/multimedia-gallery-video.