The arrival directions of cosmic rays are influenced by the Galactic and extragalactic magnetic fields, particularly in scenarios involving a heavy mass composition of primary particles. Following recent studies, we assume a pure iron composition of cosmic rays above 40 EeV and simulate their propagation in the Galactic magnetic field using the new UF23 base model. We analyze the expected arrival direction patterns on Earth assuming multiple source catalogues, including nearby active galactic nuclei or starburst galaxies. We compare the resulting patterns from the simulations with the published arrival directions of cosmic rays with energies above 40 EeV.