Most anabolic? I would guess red meat, although thats a guess. I stick mostly with fish and poultry because its cheaper and contains less fat per serving. Filet mignon is nice but who can afford to eat it all the time. Not me.
Red meat does contain creatine but the amounts are very small. I wouldn't consider meat as a source of creatine anywhere near on par with 1 scoop of creatine powder. Maybe a whole cow contains that much creatine but certainly not individual cuts.