Questions about the ending (spoilers)

[Pauca Verba]

Please do not read this post if you did not complete game yet. Spoilers ahead.

So first question is - when i finished game only one of the character's story lines were 100% finished. Are this normal?

Then, in the Zoey story, what happens if you will decide to leave her? When i watched other endings on youtube, she always comes from different side of the border, but how can she do that if she is dead or captured?

Then, in my ending and all other endings i saw she dies. Then how can she narrate about what happened in the future of the country?

Another thing that i noticed would be the choices. So far i saw only 3 types of endings - revolution happens, revolution fails, and elections happen. But what about sub-choices, like chosing how brigade should act, are they affect anything?

[El Vertedero]

-I needed to finsh the game 3 times to achieve 100% in all characters, so is normal. 100% was Zoe, right? IS the same for everyone.
As far as I know, if she dies, she dies. She won't spawn at the end. At least it nevers happened to me yet.
-The "narrator" voice is a voice. Take it as "the spirit of the game". I think they have reused some actors and actress (in phone calls, for example, I thing they reused Fanny's voice).
I only found changes if you help Fanny to identify John, and convice Alex not to build the bomb: At the end they reunite as a family and escape together. About brigades being more or less violent... nope. I'm id dark too.
-About helping Stan & Mitch to discover Jarrod's plan, yeah, they appear at the end (and in another episode) but nothing else seems to have changed.

[Pauca Verba]

But the narrator is literally labeled as Zoe in subtitles)

Weird, because in my ending i didn't had encounters with identification or bomb, but i still had a choice to leave or fight and i told John and Fanny to leave, so they left with me.

[Skipper]

Zoe will narrate even if she dies, gets captured, left behind etc.

And yes, there are basically only 3 endings with no changes to the singular characters, other than John, Alex and/or Zoe (potentially) dying.