I believe there is an object called a brown sub-dwarf which jupiter would clasify IF it wasn’t part of a planetary system that basically represents the smallest type of failed star, however since jupiter formed from a protoplanetary disc it is indeed a planet. It really is a bit of an issue with our classifications that they’re context dependant though. E.g the moon on its own could be a dward planet, earth orbiting at the same distance as pluto would also be a dwarf planet even with no other changes.