It may be too soon for you to understand this but the real creativity of playing guitar comes from the right hand. How the pick or fingers hits the string(s), the angle the pick hits the strings how many you choose to play on any given strum D or U. How many you accent. Even more important sometimes, which ones you play softer.
Almost everyone plays an open D the same way. How does everyone make it sound different. It is what the right hand is doing. Everybody’s left hand just holds down 3 strings.