Drawing Sprite from Script

I want to make a 2D strategy game. The map will consist of square tiles which I want to store in a 2D array of integers, for example, value 0 would represent a water tile, value 1 would represent a plain, and so on. I was wondering if there is any way to draw the sprites from a script. For example, determining the position by providing the top-left coordinates, the width, the height and the sprite itself. That way I would get rid of the gameobjects and I would just have to store a single sprite for each type of terrain.

I have been searching for it but I am unable to find what I am looking for, most results are about how to change the sprite rather than drawing it.

I am looking to do it this way since I have some code I did in Processing which works like that. Other reason is I want to be able to move the camera around, and this way I could do it just by changing the top-left position of every image.

My question is which is the easiest way to achieve what I want, if any.

Thank you.