On Wildbuddy there is a DEVTOOLS tab. If you hit refresh Objects and wait a few seconds it'll give you the ID of all the monsters and items in your area.
Also, if you target something and use either of these hotkeys, you should obtain useful information you may need (it is output to the WB window): TargetDump (Alt+Shift+D) Interact (Alt+Ctrl+I)
I'm not sure if CreatureIds work, been trying to avoid tag , didn't work. Just use a grind tag and a hotspot.
They should work if you implement them in the grind tag (<Grind CreatureId="1,2,3,4,5">) but the AvoidCreature tag seems to only mark the first instance of the ID that the bot detects and then attempts to get slaughtered by all subsequent creatures of that ID, best to take an inventory of all mobs you want to kill and use them in the grind tag.