Correlation between a) stellar mass and half-light radius, and b) the Clumpiness (S) and Asymmetry (A) for the SMG and field samples in the NIRCam F444W filter. In each panel we show histograms of each parameter for the field (hatched grey histogram, scaled down by a factor 10), massive field (black) and SMG sample (red). In panel a) we also overlay the mass-size relation for 2 < z < 3 SFGs from Ward et al. (2024) and in panel b) the relation between Asymmetry and Clumpiness identified by Conselice et al. (2003). In panels c) and d) we show the distributions of Sérsic index (n) and axis ratio (b/a) in the F444W band. For each distribution, we display the KS probability (p_KS) that each field sample and the SMG distributions are drawn from the same parent population, where p_KS < 0.001 suggests a significant difference in the distributions. We plot the bootstrap median and uncertainty for the two distributions at the top of each panel. The SMGs, on average, have comparable sizes and lower Sérsic indexes than both field samples, whilst exhibiting similar axis ratios and clumpiness with higher asymmetry.