What if I'm trying to run foss apks in an isolated environment? Like a Lemmy client?

Checking the patches on their repo, it seems it will not be very useful for running bank apps and that kind of stuff on waydroid, maybe if they publish a signed image with all the patches for faking a real android environment, but the patches look like they're fixing only for their hardware/stack.

Lepton is a waydroid fork.

So yes, both are.

It's nice to have options.