Platinums are not butters. I don't know how many true Platinums there are out there, but Ralph Davis has the father of them all. (He calls him the Platty Daddy.)

Butters can indeed produce BELs. Butters crossed with any of the other BEL co-dom morphs (Lessers, Mojaves, Russos, Phantoms*, and other Butters) produce BELs. I'm told Mochas also produce BELs, but I've only heard those mentioned once; I don't know anything else about them.


*Caveat: Super-Phantoms are not BELs.