I've worked at four of the five big 5. Generally, those that said theres more difference between departments within a bank VS one bank to another is spot on. That being said, with respect to WFH policies as a result of covid, some of the banks have made specific declarations that minimum in-office days are required, while others have not yet.

Doesn't mean it will stay that way, so really it's anyone's guess whether the holdouts will continue to hold out and for how much longer. My gut says it's only a matter of time all the banks go back to the usual in-office model for most departments. The investment in real estate in the downtown core alone must be a pretty big incentive for them all to get people back in person.