Just about any propane camping stove can be used, but it will probably need a simple modification.
RV propane systems are low-pressure. Right after the tank(s) is a regulator that lowers the pressure before it's distributed to the RV, including the outdoor quick-connects.
Most stoves use high-pressure, but have a regulator that normally attaches to the propane bottle. Downstream from that, it's low-pressure. To use a typical stove on low-pressure, all you have to do is remove the regulator and attach the supply hose there.
Any good propane supplier will have the fittings needed to do that. (There are a few off-shore suppliers that use metric fittings, though. That will make it difficult to convert to US fittings.)
There are a few postings in the "Do It Yourself Mods" section of this forum that cover this.
