Need a screening tree for the corner of my lot, raised bed and full sun. No more than 15-20 feet wide (max) as its a bit of a tight spot. Any opinions on Canada red chokecherry?

In a different spot, I want to plant a tree in a circular bed by the front of the house. Want something relatively upright with a small footprint. What about Amelanchier standing obelisk? Says its only 4 feet wide but I see few opinions on GW. Also, would this be something you could limb up?

Any other suggestions for ornamental trees that are small (10 feet or so) but taller than they are wide?