  Taking cue from the recent experimental realization of metallic phases in
Kagome materials we report the low temperature signatures and thermal scales of
Kagome metals and insulators, determined in the framework of the Kagome Hubbard
model, using a non perturbative numerical approach. In contrast to the existing
consensus we establish a flat band localized insulator in the weak coupling
regime which crosses over to a non Fermi liquid (NFL) metal at intermediate
coupling, followed by a first order metal-Mott insulator transition in the
strong coupling regime. We provide the first accurate estimates of the thermal
scales of this model and analyze the NFL phases in terms of resilient
quasiparticles and short range magnetic correlations. With our unprecedented
access to the low temperature phases and sufficiently large system sizes, we
provide the essential benchmarks for the prospective experiments on the Kagome
metal and insulators in terms of their thermodynamic, spectroscopic and
transport signatures.
