The mullet name is also used for the new gen”downcountry” bikes that sport longer travel in the front - 100 rear 120 front, etc even with the same size wheels. Usually 29 - 27.5 seems to be about to circle the drain
but Specialized also made a dissimilar wheel bike in the late 90’s early ‘00s - the original Enduro model, but it was 24/26 like the old Beast from the East Cannondale