The Jupiter families!
because they probably actually formed in the Kuiper Belt... They were then pulled in, and leveled out with the planets (
KOZAI!!!!), and pulled further in by Jupiter. The ones that currently reach out ot the kuiper Belt, may eventually become a Jupiter family, but most of the non-coplanar comets are from the Oort Cloud (thus seeing the odd inclinations, cause the Oort is a sphere).