Looks to me like Amsonia hubrichtii, Arkansas bluestar. It's actually a perennial, not a shrub, so it will die back to the ground in winter and resprout from the roots. Light blue spring flowers, this lovely feathery foliage all season that turns bright gold in the fall.

Thuja occidentalis AKA arborvitae if you don't have deer. There are cultivars with a range of heights. Two I have are Sunkist and Techny which will stay in your size range. Lindera benzoin AKA spice bush has really early tiny chartreuse flowers and bright yellow fall color. Clethra won't get very much over 4' IME, but has late summer blooms. Red-twigged dogwood (also available with either variegated leaves or gold twigs) has several larger sized selections. Be sure to check the height of the cultivars you are considering. Betula migration 'Little King' AKA Fox Valley river birch is a dwarf version that should stay within your size range. It is often grow with several stems, has nice bark, and has good yellow fall color.

Yup, probably W. Wine and Roses.

Weeping mulberry.