Most apps on the list are lemmy apps, meaning they don't work with kbin. Artemis is specifically designed to work with kbin, not sure if or when any of the other ones will go in that direction or become interoperable as there are some challenges with the kbin API at the moment. Having said that, a new API is in the works so things should get better with time.
That a Slide for Lemmy is being worked on is incredible. It's the only Reddit app I've used for years after moving away from Sync for something FOSS; it's honestly perfect. I've been using Infinity for Reddit recently as Slide development halting has made it so it's really starting to feel long in the tooth (although I don't care for new Reddit features that Infinity supports).