[SPOILERS] The Roottrees are Dead clues I don't get how to decipher

I just finished the game for a third time, it is really satisfying to figure out, but there are some clues I just don't know how you are supposed to figure it out, I got them through guessing, so I am curious to know what the actual thought process behind them is supposed to be

Spoiler Warning, obviously.

The first two I am clueless about, the others I am not sure whether I arrived at the conclusion the right way or are there clever clues in there I missed.

Ron Roottree -I have no idea how you are supposed to decipher from Gwynn's picture which one is Ron and which one is Robbie, neither in the itch version nor Steam version, what am I missing?

Jim Roottree - How do you figure out from the Free Spirits photo which one is Jim and which one is Clark, they are the only two males with no clues pointing to them in this picture, and neither particularly look similar to their newer photos. also Bonus question, but is there a way to decipher these two and the LaRouxs from These Times in the itch version? they look identical, so I had no idea which is which, but the Steam version seems to have fixed this.

Ernie Jr. - How do you figure out whether he is the older or younger brother, is it just the fact his wife has a picture and the older child's spouse doesn't have the option to input a picture for them, or is there a clue I am missing?

Edward Roottree - His wife's name is confusing, is it process of elimination by being the only name on the list of names without any clues? the hint system says "naming convention that Lauren mentioned", I don't see how the name April Quarritch is related to anything Lauren mentioned. the only thing I can think of is her name is April and her daughter is November, so both are named after months, but that doesn't seem related to any naming convention with the rest of the family I feel.

Roottreemania - Is there anything to decipher from the DNA samples other than that Bonnie Hudson's first and second sample are different? I looked at it for like 15 minutes reading every number, I tried to match Anonymom's daughter's sample with Bonnie from 5Peez's DNA sheet, and it sometimes matches and sometimes doesn't, is the whole purpose of the clue just that Bonnie's samples are different?