Area is North Texas, North Tarrant Co.

I would like to hide a structure that is away, on the other side of my
fence. I would need a tall bush or small tree that can make it under a
couple of full grown oaks, mostly filtered sun, except for early
morning. The fence where it would be planted is close to 7 feet, and
ideally it would have to look somehow rounded, like 8', on the area
above the fence, but could be a bush or tree form.

I know it is not going to be easy. I have been thinking...

- Nelly R Stevens Holly, which would be very nice if it can make it that
high in partial sun.

- Yaupon Holly. Very well adapted to the area, but very irregular shape.

- Foster Holly.. problem is that top of bush tends to be pyramidal in
shape, which is not too good for what I need.


Any other trees or bushes that could be an option? Any ideas?