during his career Roy Jones JR has held 13 titles. whats the most titles any other boxer has won?

WBC light heavyweight title
WBA light heavyweight title
IBO light heavyweight title
WBF light heavyweight title
IBA light heavyweight title
NBA Light Heavyweight Title
IBF light heavyweight title
IBC light heavyweight title
NABO light heavyweight title
WBA heavyweight title
IBF super middleweight title
IBF middleweight title
WBC Continental Americas super middleweight title