3/4 Perspective RPG - How are Stairs/Slopes made?

I don't know why but I cannot find a single tutorial or any thread regarding stairs and slopes for 3/4 RPG Pixel art games.

How do you create the tiles/sprites for staircases and slopes in these games?

Following are examples:







How are the stairs drawn? Are they tiled? Or sprites? I couldn't figure it out. And also - they seem to elevate the player from one sort order to another sort order. That I can figure out somehow - but I just can't figure out how to "draw" the stairs into the scene? Any advice?

 

usually they are just drawned in paint for example, and dropped into the scene, usually as a prefab, you can add some collider with a proper tag to change the animaiton whenever the player gets into the "stairs" zone, i guess