Perun

Octopi supports it. In settings you can set "open folders by swiping". You can't do it on folder by foldery basis like in Nova, but that's not an issue for me

Any other launcher that lets you hide a folder behind a single icon? so tapping it opens the first app in the folder, and swiping up opens a folder itself.

Nova served me well for more than 10 years, and I built my flow around this one feature.