Juror 1 just wants to grill.
Juror 2 is gonna say something racist that ends up reuniting all the other jurors.
Juror 3 is a yuppie techbro that looks like Clark Kent.
Juror 4 just wants to get to the baseball game in time.

Gets a lot harder after that since there isn't that much heterogeneity amongst the lib media outlets to make a mapping to 12 Angry Men characters cogent at all.