Ratios of different tracers in high-z (z = 2 − 2.5) galaxy samples relative to the low-z LIRG sample (Table 6). Left: stellar versus molecular size. Middle: stellar versus mm/submm (dust-) continuum size. Right: stellar versus ionized gas size. Our sample is shown using light orange circles, while the high-z galaxies are shown following the same symbol and color code shown in Fig. 14. In each panel, we report the references from which the high-z data are taken. R_mm cont derived for our LIRGs were derived from our 1.3 mm ALMA observations, which we considered as lower limits due to the limited sensitivity of our observations.