Yes. All three are different from each other though they have the same color and texture. the preparation method and taste also vary from each other. Kadai paneer is spicier than the other two as there is the addition of freshly prepared kadai masala in it. Whereas shahi paneer and paneer butter masala are more rich and creamy and sweet in taste. Also, shahi paneer is prepared with dry fruits like cashew and almonds without having any tomatoes in it. So they are usually yellow in color. Whereas kadai paneer and paneer butter masala are reddish or orange in color which also includes tomatoes in gravy.