I've tried Liftoff (fork of Lemmur that is actually maintained and pretty great) and Thunder as well as Jeroba and Lemmur, they're both better.

Thunder is very iOS-esque and plain, Liftoff has the weird bottom layout Lemmur does, and inherits some strange UX quirks from it such as not storing last sorting preference, not having "block community" in the hamburger menu for posts, and sorting replies by "hot". Itst actively maintained so I'm sure it will improve, and it's the most stable and useful mobile Lemmy client I've tried so far.

I have not tried any closed source clients and will not do so.