Neptune is smaller in diameter than Uranus, but a bit more massive; neither Neptune nor the other planets should be considered stars (dying or otherwise); Uranus is the planet with the axis tipped nearly into the ecliptic, IOW, one or the other of its polar regions faces the Sun during part of its orbit. Which is pretty wild.
Uranus should be excluded, its origin is obviously different from the other planets, and its axis is too freaky. :')
Now that Pluto is removed, Mercury is the smallest, and is too small, and its orbit is in precession, making it too weird to be considered one of the planets. :')
With the removal of Mercury, Venus is the only one left without a moon, which makes it too strange to remain. Out it goes. :')
Mars is also too small, and is less dense than the Earth. Also, it doesn't have proper moons (just oddly shaped space debris). Out it goes. :')
There are therefore only four planets -- Earth, Jupiter, Saturn, and Neptune.
Point very well-taken. I almost thought you were being facetious... ;-) FOUR! NO MORE!
So is the plane of an axial rotation due to solar magnetism or is magnetism the result of the axis? My guess would be the latter, because ions going 30-odd AU into the frozen void shouldn't have caused dramatic rotational tilting unless, as is possible in my pet barstool paradigmatic cosmology tonight, that Sol is merely where the Solar System settled, rather than being proximal to its origin.
Off to bed. Give it some thought (and put me on your GGG list, if you don't mind).
J-