Most everygreen won't be dense if they are grown in dense shade. If there is bright shade with several hours of direct sun light then many plants will do fine. You may want to consider the following: Thuja plicata Spring Grove or Green Gian, Decker Vibunum, Brackens Brown Beauty southern Magnolia. David

I thought Viburnum Odoratissimum would be a good idea as a fence line hedge. Planted a line of them to cover 120' front property line. They have been awful. Disease prone, all sorts of insect pest, and likely a lot of the problems has been caused by the long term drought. These things are not as drought tolerant as reported, not here. Not on this sand soil I have in southern Pinellas. In fact after looking around at where these things are used, due to how common they are and price they are a favorite at shopping centers and gov. buildings I an not unique with these pitiful things. All over they are sparse in growth with a ton of dead branches. Again I suspect this is because they are not getting enough water. I will never use this junk again. They have struggled for 8 yrs and only one of the 12 has done goodd. Aphids, thrips, scale, you name it they get it when they do grow like now. What I have found working very well though it must be trimmed is the small tree/shrub, the native wax myrtle. Incredible how it thrives wet or dry and when trimmed produces a thick bush shrub privacy effect. However left on its own without trimming it will get a bit more tree like and that is fine too. It will sucker some but comparing these two plants for my purpose hands down winner is the wax myrtle.

Deer LOVE loquats (at least the leaves). Deer WILL nibble on Photinia if there is not much else green in your (or your neighbor's) Winter landscape. I purchased some Ligustrum japonicum 'Texanum' because have read that they are deer resistant but they are not in the ground yet, so not sure. Osmanthus 'Goshiki' (forgot the species name on it), is deer proof but not sure it is a fast grower. Magnolia grandiflora is deer proof BUT, they DEER LOVE THEM during the rut and will mark them if they can get close (and they are much taller than your height requirement). 'English' Laurel and Bay Laurel are also highly resistant, as is Boxwood. My Holly (including; Nellie Stevens, Inkberry, Japanese), Fargesia bamboo, and rhododendrons are completely ignored. Butterfly bush too, which should be evergreen for you, (it is largely evergreen here). Others? Consider,Yuccas or Ornamental grasses too. These have worked for me, but not sure all are reliable in your area. Good luck!

I'm afraid I'm going to start by bursting your bubble somewhat. Hedges don't stop noise. For that you need a solid barrier. Wall or fence. I'm not familiar with z6 but my understanding is that the choice of broad leaved evergreens which flower is somewhat limited. Rhododendrons, I believe will grow. Perhaps Kalmias, Pieris or Camellias but I'm not at all sure about those.