"...do nurseries have landscape designers to work with or how would I go about finding one?" While you could benefit from working with the right designer, the wrong designer could as easily take you in the wrong direction. Many designers lean toward over-planting and designers that work for nurseries are often in the business of convincing you that the more plants you use, the better. You must be clear on your own overall goals and interests. If you see landscape work that you like you can inquire to find out who designed it. If you're near an urban area where there are landscape architects and designers, you could inquire to see examples of their work. You could also try calling a landscape architectural office that does commercial work and inquire if there is anyone doing residential work on the side. These days, there are also online designers, but to use them you would need to be willing to collect and supply raw data (mainly measurements and photographs.) The picture I made is intended to get you started in a direction, not be the "end all, be all." I'm sure other planting details could be added to spice it up a little... maybe some trellises with vines or climbing roses or something. The trees I painted are modeled after Saucer Magnolia (Magnolia soulangeana) of which there are many cultivars. (I'd lean toward a smaller ultimate size.) But there are other possibilities depending on the "flavor" that strikes you and if they grow well and are available in your area: PG Hydrangea, California Buckeye, Photinia*, Snowball Viburnum (macrocephalum), Burning Bush (Euonymus alatus), Weeping Yaupon Holly (as long as they are female and you have a male nearby) as some examples. Whatever you pick, I'd grow it as a multi-trunk tree form and control the trunk structure from youth to create the desirable spread. *If Photinia fraserii grows well, it's a beautiful blooming tree if the top is unclipped. In some places it is prone to disease, in which case it shouldn't be considered. On the left where the drive appears to be elevated, I'd use a groundcover that is tall enough to come slightly above the level of drive. Variegated Solomon's Seal would be an example. At the porch, I'd use something that was lower. A solid bed of variegated Liriope could look nice.

Just recently I happened across the site for Summer Hill Seeds (looking for passion flower varieties) and found as well as passion flowers a very nice selection of unique vines I had never seen before. Aristolochia, Spanish Flag, vining marigold, etc. Most of the vines are tender to my zone but are so beautiful that it is worth the bother of yearly fall hard pruning, transplanting into pots, and wintering indoor. Also, if you have hummers around already, I must suggest the possibility of using a weigela shrub somewhere in your planting scheme. The hummers seem to love this.

Lungwort (Pulminaria) is low-growing, with spotted or veined and slightly hairy leaves and profuse beautiful blue, pink, white (or combination) clusters of flowers in spring. Hardy perenial in zone 6-- goes flat to the ground in winter, but new growth is early and vigorous. Will take full shade. Can be divided easily. Doesn't tolerate drought well, however. Should be front of the border. Bleeding heart (dicentra) can grow into shrub size & has pink or white flowers. There are lots of types from low-growing "King of Hearts" to the shrubby sort of one, which I only know as "Old Fashioned". The Old Fashioned one is very easy to divide for propagation & flowers abundantly it the spring. Depending on its location, it recedes in my yard between June & September & comes back larger every year. Can be back of the border depending on how high of a border you want. Pansies planted in the fall in the shade have bloomed for me starting mid-spring & going year-round without getting too leggy. Front of the border. Sweet woodruff makes a pretty, scented ground cover with white flowers in the spring. It spreads easily. Doesn't tolerate drought. Just let it meander through everything (but not under hosta-- won't last there). Native to PA plants: Trillium, Hepatica, Blue Cohosh, Blood Root, Virginia bluebells-- all ephemeral spring bloomers but with beautiful flowers can be planted front to mid-border & among other later, more lasting plants. Good luck.

If you mean like a privacy hedge, Podocarpus and viburnum are popular in Florida. I am not a HUGE fan - they are rather plain. https://www.gardeningknowhow.com/garden-how-to/gardening-by-zone/zone-9-10-11/zone-9-hedges.htm might give you some ideas