Ragdolls were developed by ann baker from some non pedigree cats in Bakersfield, CA.
The Ragamuffin is a breed that is a Ragdoll and a Persian and in some programs Siberians. I personally will not place a Siberian with a Ragamuffin program because I feel our breed hasn't been around long enough or type set to start creating breeds from it. In CFA, Siberian outcross is not allowed and ACFA is the only organization I know of the Ragamuffin can be shown.
The Ragamuffin is supposed to basically be a Ragdoll with more colors. However, Ragdolls to begin with had solid colors so they still have them and some are still being bred, therefore, still not sure what the purpose is. However, I suppose every breed has its place.