John Henry Lewis, Braddock, Farr and Max Baer are somewhere in the top 20-35 range. Max Baer is the worst H2H but probably has the best resume.
You can make a case for Baer, Schmeling and Walcott in the top twenty, though they have likely slipped into the top thirty while I have been posting on this forum. Jack Sharkey is probably still top thirty, but you make what you8 will of the version that Louis fought. John Henry Lewis and Billy Conn could still easily be placed in the top ten at light heavyweight. So overall that is not bad eighty years after the fact.