Honestly it's a good thing that communities are able to replicate as many times as they want. which ones is the "offical" one is just a matter of people settling down after a while
It can be a little annoying, like when Sync announced that they're doing an app for lemmy, and then your whole homepage becomes "Sync for lemmy is happening!!!" BUT the upshot to that is a ridiculous amount of redundancy. If a community mod or instance admin goes on a power trip they can have an iron grip on their little corner of the fediverse, but nowhere else. They won't be able to stop the signal unless they decide to go nuclear and defederate which seems to be a taboo and option of last resort.
Trying out all the android apps that are currently on app store, Jerboa seems to be the one most similar to RIF. Just set the appearance setting to list view. Login is top left and pressing anonymous