We have a variety of garden phlox, with the main blooming from later July, though August; with a few cultivars still providing bloom in September.
Have a number of other perennials which bloom at the same time as the phlox (e.g. daylilies (earlier), coneflowers, and helenium (later)) and have, in recent years, been adding more shastra daisies.
Last year was not a good garden for our garden phlox (too cool and rainy), but here's pictures of several shasta daisies combinations with garden phlox (Aug 10, 11, and 18, 2017).