I don't see Jenkin's getting below 7:42. I think Rupp could have scatched at Cragg's time, but it would've been a stretch and he would've had to truly peak for it.
The list:
7:38.59 Alistair Cragg’ (Arkansas) 02/14/04
7:42.79 Lawi Lalang’ (Arizona) 01/26/13
7:44.69 Galen Rupp (Oregon) 02/07/09
7:44.90 Nick Willis’ (Michigan) 01/31/04
7:45.22 ——Cragg’ 02/01/03
7:45.75 Cam Levins’ (Southern Utah) 02/04/12
7:45.94 ——Lalang’ 03/09/13
7:46.03 Adam Goucher (Colorado) 03/14/98
7:46.42 Joe Falcon (Arkansas) 02/10/89
7:46.45 Bernard Lagat’ (Washington State) 03/14/98
7:46.81 Chris Derrick (Stanford) 03/10/12
7:48.35 Andrew Bayer (Indiana) 01/21/11
7:48.79 Jonathon Riley (Stanford) 02/04/01
7:48.80 Reuben Reina (Arkansas) 02/01/91
7:49.17 Kirubel Erassa (Oklahoma St) 03/09/13
7:50.14 Elliott Heath (Stanford) 01/28/12
7:50.17 Bobby Curtis (Villanova) 02/09/08
Oversized track
7:43.08 Ryan Hill (North Carolina St) 02/11/12
7:44.20 ——Lalang’ 01/31/14
7:44.48 ——Lalang’ 02/25/12
7:44.63 Diego Estrada’ (Northern Arizona) 02/11/12
7:47.20 Edward Cheserek’ (Oregon) 03/01/14
7:47.97 German Fernandez (Oklahoma State) 02/14/09
7:48.05 Michael Coe (Cal) 02/14/09
7:49.58 Miles Batty (BYU) 01/28/12
7:49.94 Craig Miller (Wisconsin) 02/13/10