Sprite animation Patterns

There's definitely patterns in sprite movements (tiles indexes used) but how does the game differentiate a 16 tiles sprite that has animation from another that has none? There's example of 2x2 (4 poses) sprites like the flame or static 4x4 sprites like the platform in magitek factory. Is there some data table with sprite patterns (tile swapping depending on pose)? Or does exception are made directly in the code depending of the sprite ID?

Edit: I guess I'm looking for some NPC OAM data for walking pattern or sprite arrangements.