Distribution of η_T values (with 1σ error bars) against cluster morphological indicators ℳ, 𝒞, χ (upper to lower left panels, respectively) and cluster temperatures, masses, and redshifts (right panels). Dynamical classes of Campitiello et al. (2022) are shown as red circles (relaxed), green triangles (mixed), and blue squares (disturbed). Shaded grey envelopes denote the 16th–84th percentile dispersion dividing the sample in quartiles. The x axis in the χ panel is reversed, to preserve the same relaxation ordering of ℳ and 𝒞.