Relation between outflow velocity and escape velocity. Galaxies of our sample with individual outflow detections are shown as circles with their size increasing with larger escape fractions. Local starbursts are represented as hexagons (Heckman et al. 2015). Nearby dwarf galaxies, including AGNs and star forming and composite galaxies (based on their optical classification), are shown as squares, stars, and pentagons, respectively (Manzano-King et al. 2019). The dashed line reports the 1:1 relation. All data are color-coded for their stellar mass.