Scaling relations for the molecular and neutral gas content of disc-dominated galaxies as a function of stellar mass. Grey scatter points are literature values from Karunakaran et al. (2024), Leisman et al. (2017), Papastergis et al. (2017), Wang et al. (2020), and Cao et al. (2024). Points with arrows pointing downwards are 5σ upper limits. GAMA 526784 is shown in all panels with the red star symbol. Black edges indicate measurements made using a metallicity-dependent CO-to-H₂ conversion (Accurso et al. 2017); otherwise, the measurements were made using the standard Milky Way α_CO conversion. GMCs are shown with plus signs; their masses were also calculated using the metallicity-dependent conversion.