@gabino yes I did a few test of animated objects in Unreal, but for real production I've used it only for archviz flytrough, because it has good visual quality and reasonable render time.
I managed to make it work with animated objects coming from 3dsMax both using animated/skinned fbx and alembic cached animations (mainly for particle systems, animated splines/booleans and this kind of stuff).
In real production, for animated objects I tend to prefer Unity 3d over Unreal.
I find Unity timeline interface more straightforfard compared to Unreal sequencer.
I find it easier also to keyframe objects in Unity itself (alongside with the usal imported fbx and alembic animations).
I'm not into "proper" character rigging, but I do sometimes use animated entourage people from 3dsMax "Populate" crowd system and also some Mixamo take for more specific characters with some particular animation.
I import those as skinned fbx files (with skeletons)
I also did some conveyor belts animation, one of which you can see in this video.
This was made with 3dsMax particle systems and controllers to be used in Unity, but it could absolutely be imported in UE5 with no problems at all.
Animated conveyor belts.mp4
In this post I shared a video of animated objects rendered in Unity 3d
All of this objects could be imported and used in UE.. except I find it more cumbersome and just prefer to use Unity for this kind of stuff and Unreal just for camera animations.
But probably it's just a matter of taste and habits..
You could do pretty much the same in UE.
