Best splitpush junglers?

Currently I am stuck in silver a bit and I find a lot of times when my group can't group fight well I end up being able to carry via splitpush with udyr. Can anyone else name some really good splitpush junglers that will fit into that category I just find it helps take the pressure off. I try to do YI and he splitpushes well but if they have a lot of cc it's rough.