Topological kink states are inherently tied to valley-based topological charges, and extending this framework is critical for enhancing quantum transport efficiency. Using tight-binding models, we demonstrate that even-spin-Chern (ESC) insulators offer a versatile platform for realizing new classes of topological kink states when integrated with quantum spin/valley Hall (QSH/QVH) insulators. A buckled ESC/QVH junction hosts topological multifold kink (TMK) states arising from multiple topological charge sources, yielding highly spin-polarized, dissipationless chiral channels. A planar ESC/QSH junction supports a mirror-protected topological crystalline kink (TCK) state with six channels that markedly enhance the transport efficiency. Interfacial hopping governs the emergence of gapless topological kink states. Density functional theory calculations identify the Pb/${\mathrm{SbAsH}}_2$ junction as an exemplary candidate for realizing disparate TMK states. Our work establishes ESC insulators as a promising foundation for high-performance quantum topological devices and provides insights into the classification and microscopic origins of topological kink states.

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• Spintronics
• Topological phases of matter
• 2-dimensional systems
• Tight-binding model