REAPER comes with a VSTi plugin called ReaSamplomatic 5000. I've used it to make drum machines, but this week I grabbed the same samples of my Chapman Stick that populate my PCMSynth patch, and put them into the RS5000.
I was rather pleased with the results. Then I came across the track "Desert Sky" by Silent Partner, sometimes used as "sad music" by a YouToober that my wife watches. My Yamaha keyboard doesn't have a patch that sounds like the piano in that track, but the "Cheap Rhodes" preset for PCMsynth sounds almost exactly right.
So the other night, I grabbed the five samples from the Cheap Rhodes patch and imported them into the ReaSamplomatic VSTi. I set the note ranges the same as in the PCM patch, and then I had to figure out how to properly loop them. Trial and error got it just right (eventually) and now I have the Cheap Rhodes PCM preset available in my DAW