You aren't limited to just these. There are also ♇ Pluto, the asteroid belt minor planets (⚳ Ceres, ⚴ Pallas, ⚵ Juno, ⚶ Vesta, etc), heck, even the numbering of individual asteroids are technically stand-ins for symbolsedit: Link for funsies
If one exhumes Bazalgette's grave and hooks him up to a generator his rolling could power a small part of London.
M$ only licensed portions of the game, with the porting work made in house. A true first party M$ IP would be the flight sim.