Aliens: Outbreak - questions!

Thanks in advance to anyone kind enough to provide answers!

I picked up a copy of the Aliens Original Comic Book Series 30th Anniversary Edition, mainly because I've always been interested in seeing or reading a story in which the alien homeworld is explored. I'm not very far in so perhaps this is premature, but so far my journey into the noncanonical world has been frustrating, and I'd like to proceed without being quite so irked!

In The Theory of Alien Propagation story, Xenomorphs appear to be flying about all over the place - on a *different* Engineer derelict (and shortly after this there's seemingly an Queen inexplicably aboard a human ship -- but it might just be confusingly drawn), as well as some involvement with these (rather naff, in my opinion) lizard aliens. (Why confuse the whole thing by adding lizard aliens into the mix?) 

Part of what made the Xenomoroph so terrifying is no one (extending to in-universe characters) had ever seen anything like that before - and Ripley's entire existence became about eradicating the threat. If it's the case that the Xenomorphs are just kind of everywhere, all that is rendered somewhat redundant. Now, clearly W-Y were aware of their existence, but I'm hoping that Covenant and subsequent films will provide an answer to that that will make sense in a canonical context. 

Obviously this weird cult featured in Outbreak is aware of the aliens, and even appear to have acquired one? Is that right? Again, it may be confusingly drawn. But with all these Xenomorophs floating around, why is Hicks being sent to the alien homeworld to collect specimens? Surely there's no point? 

As I said, I've only really just begun reading and perhaps I'm being impatient! I just want to be sure I'm not getting this all wrong before I proceed. Obviously less spoilery answers would be appreciated! And if all these questions are going to be resolved within the story, then please let me know too!!

Thanks!