This includes every Lemmy android app that exists (atleast to my knowledge)
Thunder for Lemmy:
Liftoff:
Jerboa:
Summit:
Connect for Lemmy:
Boost for Lemmy (Upcoming):
Sync for Lemmy:
Infinity for Lemmy:
Slide for Lemmy:
Lemmotif:
Arctius for Lemmy (Lemmy-fennec):
Lemming:
Beyond:
AOS (Upcoming):
Bean (upcoming):
Lemmynade (Upcoming):
Warami (Upcoming):
Lemmur (Not maintained):
Voyager (wefwef) [Web-App]:
Photon [Web-App]:
Leanish (Upcoming) [Web-App]
The apps that I know that support mark as read posts while you scroll and hide read posts are:
Sync Summit Voyager Infinity Connect (which handles it differently)