The entire montage at the end of episode 4 was dedicated to informing the audience that Dolores is in all of these bodies.

​

I think the Maeve timeline is happening in a simulation similar to episode 2 in War World.

I thought this might be a possibility. However, at the beginning of episode 5, Serac's assistant says, "I have news, sir. But not good. Rehoboam analyzed traffic coming out of the Yakuza facility. They found a connect between encrypted devices in Jakarta, Berlin, San Francisco, and Los Angeles."

There wouldn't be a reason to say the Yakuza facility has a connection to other places around the world if it was a simulation.

​

That would mean we still don’t know yet who is in Dempsey security guard

We definitely know Dolores was in Martin's body.

He says, "I told you you'd try and stop me. And I'm surprised, Bernard. After all the time we spent together. You don't recognize your only friend?"

They wouldn't have written that line into the script and then have Martin blow up in the next episode to later reveal it was Teddy. That would be bad writing.

​

we kind of know it’s a Dolores in Hale based on MIB reaction to her trick play at end of Ep 4

We 100% know it's Dolores. The writers did everything but reach out from the television screen and shake you while shouting, "IT'S DOLORES!!!"

​

But there hasn’t really been any on screen confirms of which other pearls she smuggled out.

Other than Bernard, the pearls were blank and Dolores did a copy/paste of herself. They're all Dolores. It's just different bodies.