I really don't think there is much for a call for 15" rim tires in that range height. Most tire manu's make a lot of ranges at those heights in 16" rims due to the configuration of weight carrying capacity. Only options I'm aware of for 15" rims:
Swamper TSL radial 33x10.5x15
Swamper LTB 34x10.5
Bogger 33x10.5, 35x10.5, 38x11 (still tall and skinny)
BFG MT 33x10.5, AT 33x9.5 (old and don't know if they are still sold), 33x10.5 (*possibly other BFG copycats in same sizes)
Dunlop Radial AT 33x10.5
You might want to check known-tire-sellers-near-you websites.
To tell you the truth, I'd wished I had gone with a 16" rim rather than another 15" rim. I'm running 34" LTBs since my TJ is not a DD. The 16" option would definately provide better opportunities for a 33-35" tall, 10-11" width tire, even radials.
Good Luck.