They have varying degrees of 'inelegance' or 'complexity.'
But generally they closely conform to Einstein gravity/standard model, as they incorporate relativity.
But that's still the thing. No theory can explain gravity across the spectrum of variables (from micro to macro scales, apparent lack of dark matter in some galaxies, black holes, why galaxies don't fly apart, etc.) We have a dark gravity problem regardless of which theory you like best.
But generally they closely conform to Einstein gravity/standard model, as they incorporate relativity.
But that's still the thing. No theory can explain gravity across the spectrum of variables (from micro to macro scales, apparent lack of dark matter in some galaxies, black holes, why galaxies don't fly apart, etc.) We have a dark gravity problem regardless of which theory you like best.