Color-composite image of the LMC combining the Hα (blue, Smith et al. 2000), SAGE/IRAC 8 µm (green, Meixner et al. 2006), and HERITAGE/SPIRE 350 µm (red, Meixner et al. 2013) images. The positions of the 20 ALMA fields are marked with white circles 15 times larger than the field of view of our ALMA observations and the field number. The color-composite images of the fields with hot core detection combining the VMC K-band (blue, Cioni et al. 2011), ALMA CS (5–4) peak intensity (green, this work), and 1.2 mm ALMA continuum (red, this work and Paper II) images are shown as insets. The hot cores reported in this paper, 4A (ST16; Shimonishi et al. 2020), 6A (N105-2 B; Sewiło et al. 2022), 6B (N105-2 A; Sewiło et al. 2022), and 14A are highlighted in the insets images.