I've read about creating separate users at the OS level, but I'm hoping for something a tad lighter. Are separate Firefox profiles and/or multi-account containers a thing in any of the various Firefox spinoffs for Android?

Testing in Fennec browser, in the little kebab menu, I see an option to sign in, but that's not what I want. I don't see anything related to profiles. When I browse to the page for the multi-account containers extension, it says not compatible w/ Android.

Does one of the other Firefox spinoffs for Android have either of these features (profiles or multi-account containers)?