I am not an expert in tonal quality.
I did have a James Goodall RGCC for a while. I've sold it last year.
From what I remember this has more OOOmmmphhh. Fuller than the RGCC.
Sorry, I don't have any microphone to record it in its natural sound.
Here is the video I've just made. I hope to help somehow to identify or to listen to the tone.
https://youtu.be/ayOntHj7r6Q
As you notice, I stumbled when playing an acoustic guitar since I play my electric guitars 90% of the time.
Thank you for checking this out.