Magnetic skyrmioniums, possessing zero net topological charge, are promising candidates for next-generation spintronic devices. Using micromagnetic simulations, we investigate the current-driven dynamics of ferromagnetic (FM) and synthetic antiferromagnetic (SAF) skyrmioniums in granular nanotracks. Local variations in interfacial Dzyaloshinskii–Moriya interaction, anisotropy, and saturation magnetization are found to strongly influence skyrmionium mobility and stability. FM skyrmioniums exhibit pronounced sensitivity to disorder, showing pinning at low current densities and Magnus force induced deformation at high current densities. Their mobility is strongly dependent on grain size: smaller grains promote smoother motion, while larger grains enhance pinning. Moreover, an external magnetic field is found to enhance FM skyrmionium stability by mitigating transverse distortions. In contrast, SAF skyrmioniums display remarkable robustness across a wide range of disorder strengths and current densities due to the cancellation of the Magnus force, maintaining higher longitudinal velocities. Disorder-induced pinning forces hinder the longitudinal motion of both FM and SAF skyrmioniums by introducing energy barriers that suppress their velocity, however, the effect of disorder is weaker for SAF skyrmioniums. These findings establish SAF skyrmioniums as robust, disorder-tolerant candidates for next-generation racetrack memory and spintronic logic devices.

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• Magnetic anisotropy
• Magnetic texture
• Magnetism
• Magnetization dynamics
• Micromagnetism
• Spin dynamics
• Spintronics