Usually, the dominant hand is in an Eastern Forehand, Continental or Eastern Backhand. I usually in its own Semi-Western Forehand, Eastern Forehand or Continental. Only you can find the right grip for the particular stroke you are attempting to hit. At times, I use an Eastern Forehand and a Continental. The rest of the time I am in a Continental grip for one-handed slices and defensive lobs.
Most accomplished players have at least a few grips which they vary as is needed.
I considered generating photographs to accompany this article to help clarify grip position, but I thought better of it. It has been my experience that students try to copy every little detail of the grip as portrayed in the photograph. What is important to know is which of these grips are closest to what you use. You can be off a bit in your grip and still understand what it can or can't do well for you. The Western Forehand is a great grip for high bouncing balls.