I'll take a stab at it, snrub.
First pic, female RES.
second and third pic, male northern BG.
fourth pic, male CNBG.
fifth and sixth pic, male hybrid GSF x BG. Or BG x GSF.
Oops....that's what I get from posting early.
fifth and sixth pic, RES x BG...or BG x RES. No GSF that I see.
That's my take on the top four, in line with you Tony. I am curious what characteristics on the bottom fish hint at hybridization to you. Looks like BG dominant to me, I also don't see GSF in it, what RES genetics do you see?