For a balanced ecosystem that provides high wildlife value, start with keystone plants, then focus on diversity. This creates a check and balance that helps keep pests to a minimum and ensures high wildlife diversity.
Prunus (plum / cherry) and willow are the top two keystone shrubs in central Ohio. Include at least one of each if you can.
When adding diversity to your plantings, consider including small, medium and large bushes to create trophic layers in the landscape that offer cover and nesting sites.