I see these bushes all over this region. They produce small but tart and flavorful berries every year. Birds eat most of them.
Both plants are about 6 feet tall with a distinctive clumping form with the top spreading out like an umbrella. I had ID’d them as corymbosum based on plant morphology, but it must be a southern ecotype. Highbush varieties from areas further north do not thrive here. These plants are drought tolerant, winter hardy, highly productive, and generally easy keepers. I have to net them to keep birds out. Otherwise they are trouble free.
I can eliminate at least a dozen species based on visual traits and flavor of the berries. I’ve seen plenty of highbush blueberries in the course of traveling for many years for my job. These don’t match my expectation for highbush blueberries.