I planted Autumn Joy and Brilliant about 12 years ago in my mostly drought tolerant front borders and have never regretted having done so. They truly are lovely all year round.
However, about 5 years ago I planted a new variegated variety that looked lovely the first year with its tall, upright, light green leaves with cream margins and light pink flowers. Unfortunately, the second year the plant lost all of its variegation, became prostrate, and sprawled out from the center. Had I trimmed out all of the non-variegated stems, it would have been completely bald.
So, I planted a magenta flowered Autumn Sage nearby. Its blooms are quite lovely all summer long and the branches have now overgrown the bald center of the hylotelepheum. When the hylotelepheum finally blooms, the two look great together.
I did not notice this particular plant on your list so wonder if others have had similar problems with it.