The others have all been much larger planets. Many a lot larger than Jupiter. If they were a little bigger, they'd be stars in their own right. Most of the discoveries of extra solar planets have relied on techniques which measure the effect of the planet on it's parent star. Since it takes a big planet to move a star in a measurable way, only large planets have been discovered.
Most of those planets have been quite close to the parent star as well, also due to the one of the techniques for detecting them, so they've been HOT as well as HUGE.