Mutual Servers Quick Overview

A feature to easily filter who is in mutual servers would be awesome. Even if its limited to certain permission conditions or roles. So like if I'm in carmeets1 server and John is in carmeets2 server and my carmeets1 server but we have like 3000 members, I'd like a fast way to be able to say like “who in this server is also in X server” type thing. This will help people collaborate and let admins know a bit better who is from a mutual server