After someone called Jesus “Good” master, He responded by saying, only God is good.
In the English language, you have a choice of comparisons of good, better, and best. These are relative terms that can only apply in or to the created universe. Relative terms don’t transfer or communicate truth in the Spiritual realm.
There is only one God; so, there is no one to compare Him with. But I can say that the only God who is “Good”, is “Better” than the “Best” false gods created in the minds and hearts of men. His Spirit is woven into the tapestry of my being.
I am more than happy to acknowledge and accept the fact that only God is good.