of its counterpart in 1111 iron arsenides.

One known concern for the AFS materials is the existence of mesoscopic phase separation into superconducting and insulating regions [@32li12], which would both contribute spectral intensity in ARPES data. From measurement on an insulating RFS sample (Fig. \[fig:figsi4\](d)), we see negligible spectral weight and no well-defined dispersions within 0.1eV from [$E_F$]{}, as expected for an insulator. Hence, the insulating regions in the superconducting compounds do not contribute spectral weight to the near-[$E_F$]{} energy range, in which the temperature-induced crossover is observed. We have also measured a KFS sample whose resistivity is intermediate between superconducting and insulating (Fig. \[fig:figsi4\](b)), and was previously proposed to be semiconducting containing both metallic and insulating phases [@33chen11]. Interestingly, its [$d_{xz}$/$d_{yz}$]{} bands, which must come from the metallic phase, appear further renormalized by a factor of 1.3 compared with those of the superconducting compounds. In addition, we resolve small but finite spectral weight for a very shallow [$d_{xy}$]{} electron band near the X-point (Fig. \[fig:figsi5\](c)). As expected, the peak position is even closer to [$E_F$]{}, consistent with additional renormalization for the shallow band near X, which is harder to discern with temperature dependent study. These observations are consistent with 