I use two greases, for my JD tractor I use JD PolyUrea, which they claim is one of the best for almost everything on it, from universals to spindles.
For my Tacoma I use Mystic Hi Temp Red grease, which I must say seems to be working fine. I think that Mystic's full syn grease looks good too.
As to the JD PolyUrea, it is the PU that is compatible with a lot of other greases.