That's one.

I know Mirage, for another. I think Tia too, if I'm not wrong.

Hazan's worked on the station for several years as a merc, but I won't be surprised if Duuka trumps him in how much he knows since he's lived there. That's kind of a bigger attachment to a place than simply work. 

There's Dex too, I think.

Vellios.

Uhh who else am I missing