This data repository contains the IGMAS+ (Gotze and Lahmeyer, 1988; Schmidt et al., 2011, 2020) files of the four end-member structural and density models used to analyze the rift architecture of the Red Sea. The user can directly open the files in IGMAS+ (https://igmas.git-pages.gfz-potsdam.de/igmas-pages/, accessed 12.08.2022) to explore the gravity response of these configurations. The end-member scenarios include two end-type margin architectures following Huismans and Beaumont (2011): Type I - outlined by narrow regions (less than about 100 km wide) of thinned continental crust and exhumed (and serpentinized) continental lithospheric mantle along the continent-ocean transition, and Type II - outlined by (ultra)wide regions (up to 500 km) of thin continental crust and the removal of the lithospheric mantle. In addition, we include two options for distribution of oceanic crust in the Red Sea: limited - confined only to regions of magnetic stripes following Schettino et al. (2016), and extended - in which oceanic crust is available in vast areas within the basin, following Augustin et al. (2021).