© 2023 Letters in High Energy Physics. All rights reserved.We revisit and compare the muon g - 2 implications of two classes of SUSY GUTs models in which the nonuniversal boundary conditions are imposed at MGUT. Even though the solutions to the muon g - 2 discrepancy can be accommodated in both classes, the probe for such solutions at the current LHC andDM experiments can be challenging when the models are set up in a flavor-universal way. On the other hand, when the flavor nonuniversal models are considered, the implications for muon g - 2 can be extended to a wider parameter space, and they can be probed through several experiments such as at LHC through the electroweakino productions or decay modes of the heavy Higgs bosons. They can yield interesting phenomenology to be tested in the DM experiments as well.