  A macroscopic and kinetic relativistic description for a decoupled
multi-fluid cosmology endowed with gravitationally induced particle production
of all components is proposed. The temperature law for each decoupled particle
species is also kinetically derived. The present approach points to the
possibility of an exact (semi-classical) quantum-gravitational kinetic
treatment by incorporating back reaction effects for an arbitrary set of
dominant decoupled components. As an illustration we show that a cosmology
driven by creation of cold dark matter and baryons (without dark energy)
evolves like $\Lambda$CDM. However, the complete physical emulation is broken
when photon creation is added to the mixture thereby pointing to a crucial test
in the future. The present analysis also open up a new window to investigate
the Supernova-CMB tension on the values of $H_0$, as well as the $S_8$ tension
since creation of all components changes slightly the CMB results and the
expansion history both at early and late times. Finally, it is also argued that
cross-correlations between CMB temperature maps and the Sunyaev-Zeldovich
effect may provide a crucial and accurate test confronting extended CCDM and
$\Lambda$CDM models.
