The development of two-dimensional (2D) magnetic materials provides an ideal platform for the discovery and manipulation of topological spin textures. However, most 2D materials can only support one kind of spin textures, which severely limits their diversity and potential applications. In this study, we investigate the $\mathrm{CrZn}{X}_2$ ($X=\mathrm{S}/\mathrm{Se}/\mathrm{Te}$) monolayers with ${\mathrm{D}}_{2\mathrm{d}}$ symmetry using first-principles calculations, atomistic spin simulations, and micromagnetic simulations. Our results demonstrate that domain-wall antiskyrmions can be stably hosted in $\mathrm{CrZnS}{\mathrm{e}}_2$, and under biaxial strain, they can transform to antiskyrmions. Furthermore, by tuning the in-plane magnetic field, we can induce a topological phase transition from antiskyrmions to antibimerons. We then investigate the dynamics of antiskyrmions and reveal the dependence between the antiskyrmion Hall angle and the angle of spin current injection. Under spin-orbit torque (SOT) driving, the speed of the antiskyrmion can be effectively controlled by adjusting the direction of the spin current. This design allows the antiskyrmion to move precisely along the track direction by applying an oblique spin current, thereby preventing its annihilation at the edges. This study not only uncovers diverse topological spin structures in $\mathrm{CrZnS}{\mathrm{e}}_2$ but also proposes a practical method for current-driven manipulation of antiskyrmions.

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• Electronic structure of atoms & molecules
• Magnetic anisotropy
• Magnetic phase transitions
• Magnetic texture
• Magnetism
• Spin-orbit coupling
• First-principles calculations