Panel PreFab render order

I have a canvas and I have created a 'card' on a Panel. That card has various image and text elements.

The render order of the 'cards' is currently based on the order in which the card is brought into the scene.

The Panel has no Sorting Layer on it like a Sprite Image does and even the sprites I use that are in the Image elements have no Sorting Layer option.

How do I get a 'card' Panel to have render priority?