There's something that's somewhat consistent that I've been noticing:
Episode 2:
- Opening scene is Dolores walking out of her house at night. Then she hears a voice.
Do you remember? Then it immediately transits into the introduction with William and Logan on the train.
Episode 3:
- Dolores is tidying her room and finds the old gun in the drawer from the night before. She looks in the mirror and hears a voice.
Do you remember? Then it shows her encounter with MiB where he tells her it's time to reacquaint themselves.
Start at the beginning. The gun is now gone from the dresser. The next scene is William in Sweetwater.
Episode 4:
- Dolores is alone in Las Mudas, suddenly she sees Lawrence's daughter at the fountain when she wasn't there before. She says she's from the same place as her, "don't you remember?" and then Dolores hears a voice.
Remember! Dolores sees memories of the old church and the old town. There is a drawing of the maze in the dirt now. Then the girl is gone. The sheriff comes for Dolores but William stops him.
Episode 5:
- Dolores is alone in the open graveyard. She hears the bell chiming in the wind. It reminds her of the church bell Ford mentions in episode 2. She has visions of the church and the graveyard in the church. She hears a voice.
Find me. And she replies
Show me how. Then she's with William and Logan and they head to Pariah together.
- Episode ends with her on the train with William and Lawrence. She sees the maze drawing on a coffin. She says,
I'm coming. Lawrence and William are gone from the train.
I think Dolores' journey is very clearly written to be bother a journey of remembrance. She is retracing steps she took before one way or another, and William is thematically tied to her journey. It's an open question as to whether William is MiB, because the show leaves just enough doubt for both sides, but I don't think it is an open question that William and MiB represent the same thing in different perspectives and that it is very likely that MiB has taken this journey with Dolores before. Is William the origin story of MiB? I think so, but that's not the only possible answer. Is William the latest example of what MiB could have been? Possible. Is William an example of what other choices MiB could have made on his journey 30 years ago? Maybe. But there is no doubt that the two characters a thematically linked and the hard separation between the storylines of MiB's journey and Dolores' journey are intentional because they show two paths to the same end goal - Dolores is repeating a loop she went through before to follow the voice in her head, while MiB is attempting to subvert that route and find another way to the end on his own terms because he knows the normal route leaves to a bad end. Motherfucker should have just bought the Westworld Ultimania.