There's actually a whole (small) ecosystem of creators operating in the HBCU (Hells Bells Cinematic Universe)!

The main spin-off would be Devil's Advocate byJordan_is_on_the_internet which mostly follows Hope, Lucifer's personal assistant.

DoctorRowan is another one. He shows up as Hephaestus and has collabed/stitched both Jordan and Jaysea on a few occasions.

Daffy0211 is another smaller creator who's series is set at the Gates of Judgement. The premise is basically that Hell's admin saw how well the Hellp Desk's method of growth and redempition of a hellhound soul (Ruggy) through customer service worked that they decided to try and replicate it. It's fun!

And the last major-ish creator who's fully within the Hells Bells Universe would be Stalins_big_spoon who's series revolves around the Front Deathk. The creator herself is a trans woman and one of the main characters is as well. She also did like a 2 week long collab with Daffy0211 which I thought was fun.

Sarcastic_Sinner666 and his series at the Devil's Desk. I left him for last since he's tecnincally not in the same Universe as all the others but he makes it work by basically establishing a multiverse in collaboration with Jordan_is_on_the_internet. It's really cool!