I think Huck in the game chat is a NYT writer. I think they took on the screen name early January 2017. Huck as in Huck Finn.
NYT reviewed Huck out West Jan 2017.
Juules might also be NYT writer referring to Jules Verne but I haven't found any linkage strong enough to support yet
https://www.nytimes.com/2017/01/20/books/review/huck-out-west-robert-coover.html
I think Huck is referring to Tom Sawyer's side kick Huckleberry Finn. Going on an adventure. But
Lindsey Graham seems to be nicknamed Huckleberyy by the left since around 2010.
https://shadowproof.com/2010/04/28/huckleberry-graham-returns-to-form-threatens-to-filibuster-everything-he-claims-to-care-about/
https://www.flickr.com/photos/donkeyhotey/4395710582
https://www.esquire.com/news-politics/politics/a32252/huckleberry-gives-us-a-warning/