Main panel: Radial profiles of the magnetic field strength at z = 0 for all TNG-Cluster halos, colored according to central entropy, namely, CC versus NCC state. Thin lines show individual clusters, while the three thick lines show median stacks of SCC, WCC, and NCC clusters. Middle: Same radial profiles of magnetic field strength, except the coloring and stacking are based on halo mass. Lower: Trend for the volume-average magnetic field strength within 0.1r_500c as a function of halo mass, where the color shows central entropy. For comparison, we include central magnetic field strengths from observations (see Govoni et al. 2017, and references therein). SCCs exhibit distinct radial profiles, with a strong increase in magnetic field strength at ≲0.1r_500c, and at fixed mass, SCCs have higher central magnetic field strengths compared to WCCs and NCCs.