>>213911009
This is my interpretation too. I assume the very biomechanical aliens from the first 3 movies are more like what a purebred xeno looks like when it follows a proper reproductive cycle. The aliens from Resurrection are weird human hybrids due to fucking up their queen's DNA and look more fleshy, which iirc was accidentally carried over into AvP because they reused the suits for financial reasons. The Prometheus deacon and mural are either just what a xeno looks like born from engineers or has something to do with a non-standard reproduction in the case of the deacon, we dont get a great look at what the mural creature would actually look like in life. The neomorph and protomorph are David fucking around with goo and trying to bring it back full circle to what the xeno actually is naturally like, but while he's made a lot of progress he still hasn't gotten it to the point of the original Alien. It's like humans trying to reinvent mammoths and dodos with DNA fragments.