Adam’s mother would’ve had an in the moment soul and not been a true human, but still sharing biological similarities. And Adam would’ve had an immortal soul from his conception and been a true human.
Physically there’s not a lot of difference between us and those last few door stops, but spiritually we are wholly distinct from our predecessors.
That makes sense if nature created us or if it were the process by which we were created by God.
We appear to share the belief that we are made up of matter/dust, which is “organized” by our spirit, the same as everything else on earth, which exists as a different type of being. In Genesis God forms Adam’s body and breathes in His Spirit. I would agree that He could have done so through billions of years, shaping nature, creating and building on the environment in successive “days”. However, there is a subtle but important difference between our two views. From my perspective, the reality is the person, whose body is not something that is filled with a spirit, but is rather one with the body and created as such. God being God, and not nature itself, it would be far “easier” to simply bring Adam into existence, as we will in the final resurrection, without the trouble of growing him in an animal womb and having a pack of hominids take care of him as he grows. It isn’t necessary.
The reason why there would be hominids in the fossil record is because God as “designer” (I don’t actually like this way to describe Him - He is Father, Son and Holy Spirit - Divine Love) had to get the information as to what works on earth, and Eden was on earth. Matter can be understood as information that feeds the self-other relationship that applies to the existential nature of everything, from the smallest to the biggest things, which exist as themselves and/or part of something larger, in the universe, to the angels and ultimately God. He brought that knowledge together in the formation of the first human being, who then was made two, to be reunited as one in Love.