The LHCb Collaboration has observed two types of hidden-charm pentaquark states \( {P}_{\psi}^N \) and \( {P}_{\psi s}^{\Lambda} \) since 2015. In this work, we predict two other types of hidden-charm pentaquark states \( {P}_{\psi s}^{\Sigma} \) (4367) and \( {P}_{\psi ss}^N \) (4379) within the framework of heavy pentaquark chiral perturbation theory. We suggest the LHCb Collaboration to observe \( {P}_{\psi ss}^N \) (4379)0 and \( {P}_{\psi ss}^N \) (4379)− with JP = \( {\frac{1}{2}}^{-} \) in the J/ψΞ spectrum through amplitude analyses of \( {\Omega}_b^{-} \) → J/ψΞ0K− decays and \( {B}^{-}\to J/\psi {\Xi}^{-}\overline{\Lambda} \) decays.
