>>69494
>>69495
Bamco is a big developer/publisher so there's really not much overlap in staff.
Also, because I'm sure the Steam release dates are misleading, the actual release order is
Symphonia > Vesperia > Zesteria > Berseria > Arise
Berseria is a prequel to Zesteria, but they are meant to be played in release order, not in-story chronological order.
The rest of the games have no story connection whatsoever.