Moby, the Rudbeckias are self-seeded crosses from several varieties planted years ago; Cherokee Sunset, Green Eyes, Prairie Sun, and Chim Chimnee. Each new season brings different manifestations, most are very cool, occasionally bizarre. Most of the rear border of garden isn't mulched because this increases the probability for self-seeding success.
Last year I grew some of the Cherry Brandy but I've noted no characteristics of that variety in any any of these pictured Rudbeckias. Interestingly. couple of the Cherry Bandy seem to have survived the winter heaving inevitibilty.
Here's some pics to illustrate some distinctive representatives that materialized this year:
.
This pic shows 4 different configurations. (Note the different colors and petal shapes in flower just right of center.)