We updated our Default Videos grabber to v7, which now enables support for any site that is implicitly supported by yt-dlp library.
In order to see sites that are supported please go here:
https://github.com/yt-dlp/yt-dlp/tree/master/yt_dlp/extractor
For sites that have special grabbers in KVS it is better to use their special grabbers rather than default one, as they normally provide more features.