Find the one that works for you. However, it's best to use a consistent grip and keep that variable static for each swing. It is easy to get the consistently grip right in the swing, so find one that works and try best not to change it. The grip is so critical. The hard parts all synching the correct body movements once you actually swing the club!
The major takeaway of the grip is to keep your hands balanced throughout the swing to avoid one overtaking the other. Here, the neutral grip is preferred, in my opinion, but a pro should help you if you need to change something based on your physical attributes. The vast majority of beginning golfers are right hand dominant and it feels instinctual but INCORRECT for most to get that right hand on on bottom cause its strong and pound at the ball with the arms only. That's wrong because you will only be hitting with your arms, instead of your core, for loss of club head speed - not only that, you can't use centripetal acceleration to square the club face, leading to pulls and hooks.