Both Sync & RiF have patches available from the ReVanced team, they’ve taken the API keys from the official Reddit app and you can then inject them into Sync/RiF using:

https://github.com/revanced/revanced-manager

Jerboa with some minor tweaks in settings (list mode, amoled etc.) looks just like RIF for me. However the comments section is not accurate, but still does a pretty good job. Try it out.

You likely know but maybe others will see this. Sync for Lemmy is now available.

It’s a Lemmy app that I like. The standard web app version of Lemmy feels cluncky to me, and I like the presentation of LiftOff

One of the new Android apps, Jerboa & Liftoff are open source available on F-Droid. I’m using Connect for Lemmy available on the playstore and Boost will be available soon as well as a myriad of other apps