JF Mugnier vs Chevillon Styles - newbie question

Does anyone know if the Dujac Les Cras is whole cluster?

I tried all 3 already, and while very young, they are all great. However, I agree on the ordering, 1. Chevillon 2. Dujac 3. Mugnier, They are all great bottles, but the Chevillon Cailles is step above in my opinion, Dujac was also interesting with earthy tones, and Mugnier was more riper.