John Ehrling Hi Dee, I am not sure what growing zone you are in, so it can vary. But here are some plants and flowers worth looking into that fit what you're looking for.

Standard Plants (24 to 30 inches high):

Coneflowers (Echinacea purpurea): These beautiful, daisy-like flowers come in various colors and attract pollinators.
Black-eyed Susans (Rudbeckia hirta): Vibrant yellow flowers with dark centers that bloom throughout summer and attract butterflies.
Daylilies (Hemerocallis): Available in many colors, daylilies have attractive blooms and are low-maintenance plants.
Russian Sage (Perovskia atriplicifolia): This drought-tolerant plant features silver-gray foliage and tall spikes of lavender-blue flowers.
Shasta Daisies (Leucanthemum x superbum): Classic white daisies with yellow centers that add a cheerful touch to any garden.
Unique Plants (5 to 20 inches high):

Creeping Thyme (Thymus serpyllum): A low-growing herb with fragrant foliage and small pink, purple, or white flowers.
Creeping Phlox (Phlox subulata): A ground cover plant that produces dense carpets of colorful flowers in spring.
Blue Star Creeper (Isotoma fluviatilis): A low-growing, spreading perennial with tiny star-shaped blue flowers.
Ajuga (Ajuga reptans): Known for its attractive foliage and spikes of blue, pink, or white flowers, Ajuga forms a dense ground cover.
Dwarf Japanese Painted Fern (Athyrium niponicum var. pictum): A compact fern with silvery fronds that add texture and color to the garden.