The original theme it's based on is called "Nord" and that's the expectation from a user perspective, I'm not quite sure why they renamed it.

On 2 Jan 2021, 03:05, at 03:05, Leo Famulari <leo@famulari.name> wrote:
>On Fri, Jan 01, 2021 at 02:20:14PM +0000, Ellis Kenyo via Guix-patches
>via wrote:
>> +(define-public nord-theme
>
>Thanks!
>
>> +	   (url "https://github.com/EliverLara/Nordic")
>
>Should it be called "nordic-theme" instead? That seems to be the name
>they picked.