Warren G., IMHO, was the "Clinton" of the 1920s. A total immoral failure!
Even here, the last historiography indicates that this "immorality" is highly exaggerated. For example, the famous Nan Britton story about the illegimate child was probably a complete fraud.
So what is your evidence that he was a "total" moral failure? That he played poker in the White House? So did Harry Truman.
Harding, unlike Clinton, was a modest man who (whatever his mistakes) meant well and did not lust after power for power's sake. Comparing him to Clinton (a serious charge!) is totally unfair, especially since you have not provided evidence for this charge.