Some of it doesn't translate super well into modern times. For example, Locke barely touches upon judiciary. The modern notion of separation of powers came (I believe) from Montesquieu.
I will say that Hobbes gives a far more comprehensive argument than Locke does. And some of Locke's details, including his anthropology of the origin of commonwealths, is demonstrably false.
Either way, glad to see Leviathan here!