Chris! I know it's my fault you're looking for circuits.....
These are the ones I've thought of for you, but I haven't confirmed that they don't have step, and I don't remember how complete your cathe collection is, but from my feeble memory:
HSC
HSTA
Drill Max & DM boot camp premix
original boot camp, of course
boot camp + ME bonus workout
body max 2 boot camp?
kick max bootcamp challenge -- I've never done it and I can't imagine what it would be!
SJP hi/lo & weights circuit premix
KPC/LG kb & strength circuit
cardio & weights
Hmm, maybe this will get us doing some premixes we've never done. That KPC/LG ones sounds interesting!
-Beth