Who died first question helps us examine the possible relationships between the baby, mom and LISK (The Trio). In my theory, LISK is a robber, now the jewelry on the baby and the mom are junk, interestingly they are gold plated. So looks like gold. But LISK doesn't bother to take them. So, quite probable he knows that is worthless. He knows the mom and the baby.
One thing we surmise is the victims are sexually assaulted. There may be some actual evidence about that but we don't know and I'm not getting into there. So, sexual assault theory is based on mainly three things, victims are female, possibly found undressed, the phone call to Sis Amanda. So the Mom is dressed or undressed?
Another issue about their relationships (the trio), who killed the baby? Is it possible that the woman killed her? Baby died her own?
When did they die? Same time or there is a time period between the mom and the baby? Because Jessica Taylor's remains will tell us a quite plausible route the guys takes. But when you put the mom and the baby you'll find a paradox - or do you? -. Dormer said they found some bodies on the other side of the road as well. Eastbound side. Woman is found on the other side? Now these things show the homebase of the killer(s) if any.
Another question is Why the baby is killed/died? My perp is not a baby killer/rapist. So why he killed the baby (a baby perhaps his own baby). List the possibilities and I'll give you one more thing which you forgot, that will drive the possibilities to a direction.
Why no gun? My perp could easily have a gun but we don't see a gunshot wound. Why? There are a lot of possibilities that he may have, he may not, he may not have used. But among all of them one is curious. What if he has a gun but doesn't use it because of the sound. This may show a permanent home base in some crowded neighborhood. Not a super critical thing but it is a possibility.
He was in jail. I can say that 99%. Quite probably at a young age. There may be one or two perps. So one of them, two of them both in jail? depends.
Crime Scene is I'm using to cover all the three kill site/dismemberment site/dump site. Does he have all three? JT case. For example, is it possible that JT may not be sexually assaulted? Snatched, killed in a car, taken to a garage dismembered and dumped? Or JT was killed in a location. Taken to another location to be dismembered and dumped. Her head is clearly not cut in Manorville, that is 100%.
We can get in to the basics of his psyche, step by step. You can start making your own list. Question 1 "What is his worst fear?" Question 2 "Why is he killing?" I say he's not a kill addict.
The cunning Homicidal John theory? You can put it to test and see how this character is so lifeless. Megan Waterman case. She's supposedly going to a John to have sex all night but not taking her make up with her? So, steps out of John's house looking like trashbag? That makes sense? Her phone was plugged in the charger, who wants to bet?