  The present study investigates the negative energy orbits and energy
extraction efficiency using the magnetic Penrose process in various regular
black hole geometries surrounded by electromagnetic fields. Utilizing numerical
simulations, we analyze the efficiency of this process in Kerr and
Simpson-Visser geometries, focusing on extremal black holes. Interestingly, our
study demonstrates that the energy extraction efficiency remains
indistinguishable between Kerr and Simpson-Visser geometries, regardless of the
regularization parameter ($l$); this trend is consistent with previous studies
of the Penrose process and superradiance. Additionally, we present results for
the rotating Hayward black hole, showing that efficiency is influenced by spin
and deviation parameters ($g$), as well as the induced magnetic field and
charge of the compact object. Notably, we observe that energy extraction
efficiency is highest in the rotating Hayward black hole compared to Kerr and
Simpson-Visser geometries, particularly in scenarios where the magnetic field
and charge are minimal. Our study highlights the significant role of spin,
charge and magnetic field characteristics in maximizing energy extraction
efficiency, particularly in the rotating Hayward black hole context.
