Basically all I'm saying is, if one takes the hardline stance that David created the alien because of Ridley's supposed intentional master plan, then it nullifies everything outside of the 3 Scott Films, making them their own self contained trilogy, and egg morphing a thing since there is no such thing as a queen because that was Cameron's creation. Ridley certainly had no intentions regarding Cameron's film or anything that came about from it afterward. Which is cool, that's a perfectly valid choice one can make.
But if one is talking about anything relating to AvP, then in that franchise the inclusion of all the related franchises is implicit in the conceit of the thing,
So from that point, one can either accept the inclusion of the EU, in which case David would clearly be a part of but, (barring potential time travel elements from a thus far imaginary fourth Ridley Scott film), he is explicitly not the sole creator of the Aliens as we know them.
Or you can reject any story elements not originating from Scott and his apparent intentions and call Alien, Prometheus, and Alien Covenant a self contained trilogy (and possible future Quadrilogy) connected with the Blade Runner Universe as Scott has also said in interviews.
Or you can take a piecemeal approach, curating which elements and which media are and are not included in one's own personal desire-based headcanons; which, given the plethora of artistic contributors involved in the original film and everything that's come afterward in the massive interconnected wealth of creative output over the last several decades, I think is the only rational approach.
And to answer the original poster's question. absolutely not. Ridley Scott has never and will never include any aspect of Predator lore into the universe of his personal films.