In the context of bottom-up AdS/QCD models, we discuss how the configurational entropy can describe heavy non-qq over bar states. Using the nonquadratic softwall model, introduced to describe nonlinear Regge trajectories, we parametrize different multiquark and exotic meson structures to describe Z,, psi, and Zb states as non-qq over bar hadrons in terms of stability. We found that Z, is better described as a hybrid meson with one gluon tube, psi as hadrocharmonium, and Zb as hadronic molecule.