Get a list of columns from another board that match

I have two boards. One is a list of managers (and their details) and another is a list of employees (along with their details). The employees board has a mirror column that selects a manager, and pulls from it two other columns (office and region).

Right now, it’s easy to browse the Employee board and see the region and office that they’re inheriting from their manager. What I want is the ability to browse the Manager board and have a column that is a text list of all employees that are linked to that manager.

In psuedocode: A column that would display a text list (concatenated preferably) of all Items on Employee Board where column Manager=Manager item name

I’m not sure if I’m just not using the right terminology to search for this or if what I’m trying to do is impossible, but it seems like it should be fairly easy to implement.

@QuentinBaker I suggest to use 360 view app to find and connect all matching items from other monday boards. This app looks for matching key value and lists all matching items from other boards.