I created a very simple Java API that can receive related sites from the Youtube channel. It will return all URLs and link texts. You can even filter links for a specific website or social network.
YoutubeRelatedSites yrs = new YoutubeRelatedSites(new URL("https://www.youtube.com/user/WatchMojo/about?&ab_channel=WatchMojo.com"));
Map map = yrs.getLinks();
URL[] twitterLinks = yrs.getTwitter();
: https://github.com/Grunzwanzling/YoutubeRelatedSites