here are the 17 coaches in IBA who have won 2 or more NT's, I really think your IBA top 3 or top 5 comes from these 17, then it is just a matter of deciding what factors you think are important, and if they should be weighted.
most worlds are very similiar to this, if you included all coaches who have one NT, the list is 76 coaches long. Most of the variables you need to evaluate are here, notice davey and kelby have higher winning %'s than combalt and lostM, due to d1 vs d3.
| Rank | Coach | W | L | % | W | % | Champ | Bids | W | % | Champ | NCOY | CCOY | NBA |
| 1 | kelby_03 | 887 | 199 | 0.82 | 68 | 0.76 | 13 | 31 | 79 | 0.75 | 4 | 2 | 18 | 0 |
| 2 | lostmyth2 | 595 | 145 | 0.8 | 48 | 0.79 | 10 | 20 | 58 | 0.78 | 4 | 6 | 9 | 36 |
| 3 | combalt | 832 | 288 | 0.74 | 62 | 0.71 | 11 | 28 | 64 | 0.72 | 3 | 2 | 10 | 24 |
| 4 | oldave | 941 | 186 | 0.84 | 81 | 0.84 | 19 | 34 | 84 | 0.73 | 3 | 5 | 19 | 0 |
| 5 | rarlinghaus | 719 | 374 | 0.66 | 52 | 0.66 | 9 | 21 | 50 | 0.74 | 3 | 1 | 8 | 37 |
| 6 | tarheel06 | 599 | 156 | 0.79 | 56 | 0.84 | 13 | 21 | 43 | 0.71 | 3 | 2 | 10 | 0 |
| 7 | dexterdduane | 725 | 352 | 0.67 | 49 | 0.62 | 6 | 22 | 35 | 0.64 | 2 | 0 | 8 | 20 |
| 8 | gmckel1 | 735 | 244 | 0.75 | 54 | 0.7 | 9 | 24 | 48 | 0.69 | 2 | 3 | 16 | 8 |
| 9 | gordonbops | 637 | 254 | 0.72 | 57 | 0.75 | 10 | 18 | 37 | 0.7 | 2 | 2 | 8 | 3 |
| 10 | mlatsko1 | 422 | 144 | 0.75 | 36 | 0.8 | 9 | 16 | 39 | 0.74 | 2 | 2 | 7 | 0 |
| 11 | mowzer | 394 | 164 | 0.71 | 32 | 0.71 | 5 | 7 | 21 | 0.81 | 2 | 1 | 6 | 0 |
| 12 | oldresorter | 681 | 210 | 0.76 | 41 | 0.65 | 7 | 23 | 48 | 0.7 | 2 | 2 | 9 | 15 |
| 13 | pottle | 690 | 237 | 0.74 | 51 | 0.72 | 10 | 22 | 48 | 0.71 | 2 | 0 | 10 | 29 |
| 14 | supclean | 627 | 421 | 0.6 | 47 | 0.63 | 7 | 17 | 27 | 0.64 | 2 | 2 | 7 | 15 |
| 15 | tanzetti | 546 | 210 | 0.72 | 36 | 0.66 | 6 | 18 | 30 | 0.65 | 2 | 0 | 6 | 0 |
| 16 | vandydave | 817 | 230 | 0.78 | 77 | 0.85 | 20 | 24 | 34 | 0.61 | 2 | 0 | 11 | 0 |
| 17 | wpd6900 | 225 | 83 | 0.73 | 14 | 0.64 | 2 | 8 | 20 | 0.77 | 2 | 0 | 5 | 0 |