Name of the room + number.
I’ll give the human readable name a bit more info like if it’s a fan (then it’s ‘Kitchen Fan 1’, ‘Kitchen Fan 2’, etc…), but I’ll usually make a group and expose the group to voice and the group would be based on the human name (Kitchen Fan). For most rooms though, I only really care about the room itself, so, “turn off the kitchen lights” is all that’s really needed and that’s handled by the zones.
I use Synergy for the KB/Mouse sharing.
You basically just load software on all wanted systems and tell the software where their screens are and you can seamlessly move your mouse from screen to screen and system to system. You can optionally allow it to keep the clipboards in sync too.
I got in on it like 10 years ago as part of a crowdfunding campaign, but they’re still around and look to be relatively reasonably priced.