Spherically averaged stacked radial profiles of six gas properties. Clockwise from the top left, we show: temperature, density, nonthermal to thermal pressure ratio, metallicity, magnetic field strength, and total pressure. Colors contrast TNG-CR (red) versus the fiducial TNG run (black), while the line styles correspond to different halo mass bins. For the 10¹² M_⊙ mass bin in each panel, we also show profiles from the CRs but no feedback run (TNG-CR-NF; orange) and TNG-Weak CR (blue). The inclusion of CRs impacts most properties: halo gas is less magnetized and metal enriched in the TNG-CR and TNG-CR-NF runs. Profiles in TNG-Weak CR are always closer to those of fiducial TNG. Most notably, the nonthermal pressure support of CGM gas (≳0.2 R_200c) is relatively larger in the CR cases as compared to the TNG run, although profiles in the galaxy (≲0.2 R_200c) are largely similar across the various runs. Insets in all panels show individual profiles of Milky Way-mass halos in TNG-CR, with curves colored by halo mass (see text).