I struggle to find any example of a Drag&Drop ListView, with the list items being a Row Widget made of at least two other Widgets and one of them inside an Expanded (I can see people having problems with the feedback Widget to keep the same dimension as the child of Draggable). Also having the other list items moving up or down while one is dragged over would be very helpful. And last, it would be useful to have the list scrolling up and down depending on where the draggable item is dragged.

Something like this https://www.youtube.com/watch?v=tNgevYpyA9E (for the list view only, the video contains some examples for GridView as well)