It is compatible with other loot table data packs, which is handy if you like using Vanilla Tweaks packs like me.

It's recommended to add this pack before you start a world, but if you're going to add this to an existing world, be aware that this pack won't know what mobs already have an name. To fix this, run the command to update any mob within 32 blocks:

/function drop_name:update_mobs
Once you have installed this pack it is a pain to uninstall and get back default drops to your named mobs, so make sure you're happy before adding :)

If you need to remove this pack from a world after playing with it, read these instructions carefully before doing so:


Compatibility:
> Mobs that you can pick up with a bucket won't drop name tags, as they can be renamed in an anvil
> This pack won't work for mobs that don't reference the minecraft namespace for their loot (e.g. a custom mob). You can still use it alongside them, but those mobs will be ignored and won't drop name tags.
> Once you run the function to update nearby mobs, anything found with a custom name will drop a name tag, even if you didn't name it yourself.

Drops:
> If a red sheep that has been converted from a blue sheep by an evoker dies, its loot table won't update and it will still drop red wool. This will only happen in very select circumstances so I didn't think it was worth accounting for it.


If you find mods easier, then I found a few that do what this pack does after I had started making this. Search 'name tag' on Curseforge or Modrinth and you should be able to find several.