Its the squadmates of all three games. As far as I can tell (LtoR): James Vega, Kaidan Alenko, Zaeed Messani, Samara, Miranda Lawson, Liara T'Soni, Urdnot Wrex, Mordin Solus, Garrus Vakarian, Commander Shepard(male), Tali'Zorah, Javik, Grunt, EDI, Jacob Taylor, Thane Krios, Jack, Kasumi Goto, Ashley Williams.
You forgot Legion.
AH Thanks! I'm about halfway through the second one now so all (well, most) of this is making now. Definitely wish I gave this series a closer look before but better late than never I suppose.
There is also Legion, standing next to Samara.
And do play this series. It is the absolute best video game series of all time.
And do play this series. It is the absolute best video game series of all time.