Once in a Lifetime and Eternum from Caribdis. This is definitely somewhat inspired by Cari's work. Also, Fates Collide and Twisted Fates which I'm pretty sure are also inspired by Cari. The tone, content, and atmosphere are similar. If you like Unraveling August, you'll probably adore everything Cari does. I'd recommend starting with Once in a Lifetime if you haven't already devoured what's out for Eternum.
The Arson Betrayal and Shale Hill Secrets are different, with Arson having more film noire elements and Shale having a more oppressive atmosphere. If you've ever seen the movie Brick, Shale has a little bit of that vibe. Shale HIll's production and story telling are really, really tight.
Evermore is also worth it, and has some overlap, but it starts a little bit awkward. PrometheusEVN (the creator) is still finding their voice but the story and composition are picking up nicely.
If I'm not wrong, August is also partially influenced by Harem Hotel, which is good, but a very different vibe.
Honorable mention would be Tales from the Unending Void for a sci-fi with a similar balance of tension, but more of an "on the run" feeling and nowhere near as much comedy. It also more seriously explores tension around familial relationships.
Happy gaming!