Tauros. Tauros has the worst move pool out of all three of those Pokemon, so you should give Body Slam to Tauros.
-Body Slam (TM)
-Whatever you want.
Rhydon: (This is if Tauros has Body Slam)
-Submission/Seismic Toss (TM)
-Rock Slide (TM)
-Double Edge (TM)
Hitmonlee: (This is if Tauros has Body Slam)
-Hi Jump Kick
-Mega Kick (TM)
I hope this helps you with your Yellow journey! Also, don't use Hitmonlee on a Ghost type.