Poids Plumes Hommes
 | Jack Jenkins | 4-2-0 UFC | #1276 |  |
 | Jack Maguire | 1-0-0 REC | #6568 |  |
 | Jack Shore | 6-3-0 UFC | #1583 |  |
 | Jackson Glass | #8054 |  | |
 | Jacob Kilburn | 0-2-0 UFC | #3940 | |
 | Jacob Pais | #8046 | | |
 | Jacob Wiggins | 0-1-0 REC | #5159 | |
 | Jacob Yancey | 1-0-0 REC | #1728 | |
 | Jair Farias | 0-1-0 REC | #6996 |  |
 | Jake Childers | 0-1-0 REC | #5820 | |
 | Jake McHugh | 4-1-0 REC | #396 |  |
 | Jake Wilkins | 0-1-0 REC | #6378 |  |
 | Jakub Batfalsky | 4-2-0 REC | #1400 |  |
 | Jakub Tichota | 3-4-0 REC | #3389 | |
 | Jamall Emmers | 5-4-0 UFC | #1172 | |
 | James Adcock | 0-1-0 REC | #7299 | |
 | James Gallagher | 1-2-0 REC | #3713 | |
 | James Guidry | 0-1-0 REC | #7660 | |
 | James Hendin | 4-2-0 REC | #1986 |  |
 | James Opio | 0-0-1 REC | #6947 |  |