There were...
40 WWWF United States Tag Team Champions
5 WWWF United States Champions
3 WWF North American Heavyweight Champions
6 WWF International Heavyweight Champions
11 WWF Junior Heavyweight Champions
18 International Tag Team Champions
1 WWF Canadian Champion
10 WWF Women's Tag Team Champions
6 WWF World Martial Arts Heavyweight Champions
1 Intercontinental Tag Team Champion
144 WCW World Tag Team Champions
77 WWF Light Heavyweight Champions
63 WCW World Heavyweight Champions
36 WWE European Chamopions
230 WWE Hardcore Champions
79 WWE Cruiserweight Champions
49 ECW World Heayweight Champions
176 World Tag Team Champions
59 WWE Women's Champions
5 Million Dollar Champions
112 and counting WWE Champions
127 and counting WWE United States Champions
132 and counting WWE Intercontinental Champions
48 and counting WWE World Heavyweight Champions
84 and counting WWE Tag Team Champions
AND
15 and counting WWE Divas Champions
There's about 1537 champions all-time (and counting!)