I only have access to Naismith, Smith, and Wooden. But from what I can see, Camrun can be first guy to win 3 NT with 1 team in Wooden tonight and the 2nd person to accomplish that feat across all of those 3 worlds in all divisions.
I only see 1 other coach as winning 3 titles at one school and that is mwilso2 who has done it at Naismith D3 DeSales. Two other teams have 3 titles but all by different coaches (Naismith D2 Anderson and Smith D3 DeSales).