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All-electrical methods are especially important for detecting such magnetic textures due to their easier implementation in electronic circuits. Here, we demonstrate the electrical detection of different magnetic multidomain and vortex patterns through pure spin-polarized electronic transport in graphene spin-valve devices. We utilized ferromagnetic electrodes with engineered magnetic domain patterns to inject a spin current into the graphene spin transport channel, which was subsequently detected by a reference ferromagnetic electrode with a quasi-single domain. Distinct multilevel spin-valve switching patterns facilitate the discernment of the spin polarization from the diverse domain patterns. The magnetization of the ferromagnetic electrodes is correlated with magnetic force microscopy and micromagnetic simulations. 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