We've just pushed the 'BM YouTube' Elementor Block into the Yabber plugin. The block makes adding single videos, YouTube playlists (including all uploads), custom playlists, and Yabber playlists, a point-and-click experience. The 'Yabber Playlists' are those lists created for the accordion-style 'Related Videos', meaning you can define custom playlists in Yabber.
The system populates all video, playlists, channels, and other data, so you never have to manually create anything, refer to video IDs, or embed code - it's ridiculously easy to use.
A shortcode does support the feature, although Elementor is certainly a lot easier if using your own videos.
For advanced users, the system supports video escalation, so a video may be shown on the basis of resolved borrowing objective.
The various YT options applied to videos, such as start time, end time, branding, autoplay, and so on, are available via the 'YouTube Options' panel.
This simple feature supports about a dozen Yabber-based video features.