Rashba energy (E^M_R and E^K_R in meV), momentum offset (K^M_R and K^K_R in Å) and Rashba parameter (α^M_R and α^K_R in eV Å) along the K and M directions for all heterostructures.

Heterostructures	Model-I		Model-II
	SiC-MoSSe	SiC-WSSe	SiC-MoSSe	SiC-WSSe
E M	0.0099	0.0059	0.0029	0.0048
E K	0.0101	0.0051	0.0029	0.0049
K M	0.0980	0.0630	0.0313	0.0317
K K	0.0850	0.0697	0.0313	0.0328
α M	0.2020	0.1869	0.1877	0.3049
α K	0.2365	0.1449	0.1876	0.3033