At least UCLA who has won 11 NCAA Basketball Championships alone! Who else? The University of Arkansas has 44 championships in the caegories mentioned.
football, basketball and baseball.
Only one - Jacksonville State University
New York, with I believe 45 between baseball basketball football and hockey
Zero in Football And Basketball
Baseball is then Basketball then hockey and then football.
Two schools have won NCAA national championships in football, baseball, and men's basketball: Jacksonville State University (NCAA Division II) Men's Basketball (1985) Baseball (1990, 1991) Football (1992) University of Wisconsin-Whitewater (NCAA Division III) Men's Basketball (1984, 1989) Baseball (2005) Football (2007, 2009, 2010) Note 1: The NCAA does not officially sanction a football national championship in FBS / Division I Note 2: Jacksonville State now competes at FCS / Division I