I can see there will be more of those deep conflicting moments as a corpo, like: "who are you most loyal to?" type of shit. I can't see that with a nomad.
You bring up something interesting. Can we treat "Corpo" as if it was just 1 identity directly against Johnny Silverhand, though? That's what I'd like to know.
Different corpos don't exactly work together like best friends do.
Arasaka and
Kang Tao are probably at each other's throats by 2077 if all known materials are referenced. Now for personal reasons, I'd totally support Arasaka as a Corpo V but your mileage may vary.
A Corpo-V's attitude towards Corps is NOT the same as a StreetKid-V's towards Gangs. While they're all organizations out for themselves, I don't think "loyalty" matters at all for a Corp. Corps are about growth and control. You can certainly talk loyalty with a Street-Kid.
I'm picking Nomad on first playthrough exactly because Nomad-V seems clean slate. Gives me more freedom to develop the character on my own terms.