There is no rule that states any specific plane as being the best for dealing with turbulence. However, it is safe to say that bigger planes tend to absorb turbulence better than smaller planes do. Aircraft such as the Boeing 747 are massive and due to their sheer size are the best at coping with turbulence.
This does not mean that if you want less turbulence you should choose a big plane, often turbulence is unavoidable, as it is due to air pockets and the conditions of the surrounding atmosphere. A plane that better handles turbulence may feel the effects a little less.
Yet this is not always the case, while the Boeing 747 now is better at coping with turbulence, its earlier models struggled with it in comparison, being rather susceptible to meet turbulence.
As time goes on and aircraft technology is improved on, planes will feel less and less turbulence. Generally we can say that a bigger plane won’t feel as much turbulence, especially if it is a common commercial airliner, such as the Boeing. Smaller planes for smaller airlines will be the most susceptible, as well as small private planes.
If you are a person who has concerns around turbulence, airlines will often tell you what aircraft you will be flying on when you book your flight.