First two rows of the online-only figure showing the atlas of galaxies with environmental masks. Left: Spitzer 3.6 μm images, in a square root stretch ([0,  2.5] MJy sr⁻¹). The environmental masks are defined based on this NIR emission. Middle: CO(2–1) emission (strict moment map combining ALMA 12 m and 7 m arrays, as well as Total Power); shown in square root stretch ([0,  10] K km s⁻¹). Right: Hα emission, shown in square root stretch. The middle and right panels are overlaid with contours for the environments, with the same colour-coding as in the paper (red = centre; green = bar; blue = spiral arms; white = galaxy disc).