IllustrisTNG combined FoF Halo and Subfind Subhalo (Galaxies) catalogs. Any publication using data from TNG100 or TNG300 should cite Pillepich+ (2018), Springel+ (2018), Nelson+ (2018), Naiman+ (2018), and Marinacci+ (2018). Any publication using data from TNG50 should cite Pillepich+ (2019) and Nelson+ (2019). Extensive details about these simulations and the data available here are available at tng-project.org.