For large ensemble TV show casts, the typical promo photo tend to be a wide shot with everyone standing, with minimal body overlap. It seems like you would need a wide angle to get the whole scene if they are shooting in a studio, but the verticals are perfect at the edges.
How would you replicate this? And is it possible these are photoshopped together from separate portraits?
Examples (you can find many more by image searching for "cast photo"):