Well I have, I think I’m just missing a few alien/predator novels and comics post-2019, cus too much shit going on so I didn’t have time to get the last ones but they don’t mention the kind of stuff you are getting into.
I don’t know which website is that from, but feels like some random fanfiction stuff, some words that appeared in 1 or 2 old novels which have been pretty much retconned and ignored are thrown in there to make it seems legit but no, that’s not an official source in any way. Like Hish, that was the name given to the Predator species on the Forever Midnight novel, while Yautja are their name on AVP: Prey and other works.
The Hish were hermaphrodites that changed sex at random, currently in canon Predators aren’t like that. there are males and females. The Viking isn’t gonna become a girl when its gets to his turn to take it. That was a concept the author of that novel brought it up but then everyone else apart from a minor mention of the name in Flesh and Blood novel retconned cus the reception was negative. Also the Hish on Forever Midnight weren’t Hunters there were space slavers and conquerors, one of the reasons that is the most hated Predator novel among the fanbase. And Predators had this killer gland which if activated they go berserk and kill anything in their way including each other, which is how they are defeated by the main character.

