Does anyone know or have a serving size chart for cake tiers that are 5" high. Specifically, 16", 14", 12", and 10" rounds? TIA!!!!

http://www.wilton.com/cakes/making-cakes/baking-wedding-cake-2-inch-pans.cfm

Cakes from 3 to 6 in. high, baked in the same size pan, would yield the same number of servings because they follow the same pattern of cutting.

Yes,, the Wilton wedding chart is what you want to follow.
16x5 = 100
14x5 = 78
12x5 = 76
10x5 = 39