Familiar faces rejoin our hero as the journey continues…

The majority have gotten it right, IMO. They're talking about Han, Leia, Old Ben, possibly Chewy (either CC or a new one) Wedge. Maybe Biggs (but is he really a familiar face? No.) Lando is a possibility too, but he's more ROTJ and the CLS we're getting is from the beginning of ESB. Long shots are R2 & Raid Han. Highly doubtful but slightly possible are Lobot, HRSoldier, HRScout.