Luminosities of the central object against oxygen-bearing molecules in the inner disks. The colored boxes refer to the oxygen-bearing molecules detected in the MIRI spectra of each source, indicated in the legend. Tentative detections are highlighted by white crosses. The VLMS disks are highlighted in bold. The detection in T Tauri disks are taken from the following papers: GW Lup (Grant et al. 2023), Sz 98 (Gasman et al. 2023), DR Tau (Temmink et al. 2024), SY Cha (Schwarz et al. 2024), CX Tau (Vlasblom et al. 2025), and V1094Sco (Tabone et al. in prep.). Detections of Sz114 are obtained from Xie et al. (2023).