I think there are a few brands including Toyo and Nitto, but I’m going from memory. I don’t know if they are snowflake rated or not.
If you can get by with a DRW, that would be your best option especially if you are considering a larger camper. Invest in the DRW instead of just SRW tires/wheels. I kept the SRW for so long because it was my daily driver, and I simply couldn’t park a DRW at work reliably. The spaces were far too small. My 19.5s were about 2500 from memory 14 years ago. I sold my takeoffs for 500 so about 2000 in difference and I was still near the rear axle limit with the SRW. I just carried less. With my DRW, we bring whatever we want, and I’ve even towed a TT from Seattle to Yellowstone and back with no issues and perfect stability with both the TC and TT being loaded with all that we needed for a bit over a week trip.
Just some thoughts.