Any first generation cross of a blue egg layer is technically an easter egger, so you could use legbars, araucanas, isbars, etc.
Also, easter eggers aren't a breed, more of a collection of mixed breeds with similar traits that mostly lay colored eggs.
Ok. A common mistake made by people is that crossing two breeds will make a breed. This has never been the case. A breed often is composed of multiple breeds, and no matter what, must be bred for several generations for a conformational bird (breeding true) before you can brand it as a breed. So a Liege Fighter and barred rock does not create a brand new breed called "Rock Fighter" because it is a cross and does not breed true.