does this work?

target name is name of an entity!
you need to use hammer editor with 'SmartEdit' on to see those original properties of any entity.

what is target name i don't see a "name" change

you've gone to requesting a name tag ontop of a npc to legit rocket science in seconds

I have another Add-on suggestion that can be very cool with NPC Fights: NPC Spawner Tool with alot of options for example wave spawning that forces the spawner to spawn multiple npcs instead of just 1 every few seconds, max amount of npcs allowed to be spawned, size multiplier, health multiplier and alot more cool stuff

like a text floating above it, or maybe just a stool that lets you attach/place text anywhere!

I could probably integrate that with this addon once I figure that out.

can you make a stool that lets you display name tags on NPCs and Props?