Region of XMM-LSS covered in the MIGHTEE ES data. From left-to-right (decreasing right ascension), the three fields are XMM-LSS-14, XMM-LSS-13, and XMM-LSS-12. The solid lines indicate the full width half maximum of the MeerKAT primary beam, and the dashed lines represent the 30% response level. The MIGHTEE H I detections are shown as circles, shaded based on their H I mass. Also included are the LSBGs of G18 (blue squares) and the UDGs and UPGs of L23 (green pentagons) that fall within the considered footprint.