Has anyone done the catacombs tour? If so, what company did you use?
Haven't done it but we did do the San Sebastiano catcombs nearby. You don't need a tour company for either: tours are provided on-site so just show up during visiting hours and they'll put you on the next tour in English.
https://www.catacombe.roma.it/en/index.php
https://www.catacombe.roma.it/en/orari.php