Guys I think I'm onto something
Like think about it, they have frills, they have a tiny horn on the tip of their shout, and Dolores can stand on her back legs and in real life the aquilops is bipedal just like the Ultimasaurus.
On a more serious note, Jurassic World Rebirth was (at least loosely) inspired by the cancelled Chaos Effect toy line and TV series? I mean, the connections are pretty surface level, that being mutants. speaking of mutants the D-rex is kinda similar the the Doomsday Rex; they both have six limbs, are massive, and were made for the sake of profit. Another thing I noticed was the Mutadon being similar to the velocirapteryx and ankyloranodon (with the Mutadon looking strikingly similar to the ankyloranodon, just without the crest and club tail). And one final thing that a YouTuber named Goji Center pointed out was that Ember the T-rex is larger and bulkier than the average JP T-rex, similarly to a T-rex that was in the Chaos Effect concept art, which was larger than the T-rexes that came before it.