The list below was pulled from Peter Larsson's Track and Field All Time Performances pages: Fastest preliminary round 1500m times (from meets with heats/1st rounds, quarters, semis).
Assuming the list is complete, Nuguse ranks #10 all time world wide, and #1 USA. Most of these performances are from the World Champs and Olympic Games. His ACC heat performance is truly an outlier in several ways. At 3:35 and above, the feat is less rare. But below 3:35 is indeed rare, and it occurred in a mere conference meet. I am sure sub 3:40 qualifying marks have occurred at the USATF, NCAA, and some conference meets, but I do not know the fastest (or now second fastest) amongst those.
3:32.88 Noureddine Morceli ALG 28.02.70 1s1 Atlanta 01.08.1996
3:33.12 Fermin Cacho ESP 16.02.69 2s1 Atlanta 01.08.1996
3:33.30 Abdi Bile SOM 28.12.62 3s1 Atlanta 01.08.1996
3:33.57 William Tanui KEN 22.02.64 4s1 Atlanta 01.08.1996
3:33.73 Laban Rotich KEN 20.01.69 5s1 Atlanta 01.08.1996
3:33.99 Abdelati Iguider MAR 25.03.87 1s2 London 05.08.2012
3:34.35 Driss Maazouzi FRA 15.10.69 6s1 Atlanta 01.08.1996
3:34.55 John Mayock GBR 26.10.70 7s1 Atlanta 01.08.1996
3:34.60 Silas Kiplagat KEN 20.08.89 2s2 London 05.08.2012
3:34.68 YARED NUGUSE USA 01.06.89 1h2 ACC/RALEIGH 13.05.2021
(10)
3:34.69 Rashid Ramzi BRN 17.07.80 1s2 Helsinki 08.08.2005
3:34.70 Nick Willis NZL 25.04.83 3s2 London 05.08.2012
3:34.77 Mohamed Suleiman QAT 23.11.69 1s2 Barcelona 06.08.1992
3:34.80 Mohammed Moustaoui MAR 02.04.85 1h4 Beijing 15.08.2008
3:34.84 Abdelkader Chékhémani FRA 18.07.71 8s1 Atlanta 01.08.1996
3:34.89 Nixon Chepseba KEN 12.12.90 4s2 London 05.08.2012
3:34.90 Matthew Centrowitz USA 18.10.89 5s2 London 05.08.2012
3:34.93 Fermin Cacho ESP 16.02.69 2s2 Barcelona 06.08.1992
3:35.00 Elijah Manangoi KEN 05.01.93 1s2 Beijing 28.08.2015
3:35.05 Taoufik Makhloufi ALG 29.04.88 2s2 Beijing 28.08.2015
(20)
3:35.14 Branko Zorko CRO 01.07.67 9s1 Atlanta 01.08.1996
3:35.15 Taoufik Makhloufi ALG 29.04.88 1h1 London 03.08.2012
3:35.18 Ilham Tanui Özbilen TUR 05.03.90 6s2 London 05.08.2012
3:35.20 Abdelati Iguider MAR 25.03.87 3s2 Beijing 28.08.2015
3:35.28A James Magut KEN 20.07.90 1h2 Nairobi 21.06.2019
3:35.29 Hicham El Guerrouj MAR 14.09.74 1s2 Atlanta 01.08.1996
3:35.3A John Kibowen KEN 21.04.69 1h1 Nairobi 09.05.1997
3:35.40 Belal Mansoor Ali BRN 17.10.83 7s2 London 05.08.2012
3:35.41 Jonah Birir KEN 27.12.71 3s2 Barcelona 06.08.1992
3:35.47 Augustine Choge KEN 21.01.87 2h4 Beijing 15.08.2008
(30)
3:35.53 Stephen Kipkorir KEN 24.10.70 2s2 Atlanta 01.08.1996
3:35.55 Jim Spivey USA 07.03.60 4s2 Barcelona 06.08.1992
3:35.57 Balázs Tölgyesi HUN 10.01.73 10s1 Atlanta 01.08.1996
3:35.58 Charlie Da'Vall Grice GBR 07.11.93 4s2 Beijing 28.08.2015
3:35.63 Hicham El Guerrouj MAR 14.09.74 1h1 Sevilla 21.08.1999
3:35.67 Abdi Bile SOM 28.12.62 1s1 Roma 04.09.1987
3:35.68 José Luis González ESP 08.12.57 2s1 Roma 04.09.1987
3:35.70 José Manuel Abascal ESP 17.03.58 1s1 Los Angeles 10.08.1984
3:35.71 Steve Scott USA 05.05.56 2s1 Los Angeles 10.08.1984
3:35.74 Timothy Cheruiyot KEN 20.11.95 5s2 Beijing 28.08.2015
(40)
3:35.77 Steve Cram GBR 14.10.60 1s2 Helsinki 13.08.1983
3:35.78 Steve Cram GBR 14.10.60 3s1 Roma 04.09.1987
3:35.81 Sebastian Coe GBR 29.09.56 3s1 Los Angeles 10.08.1984
3:35.82 Joseph Chesire KEN 12.11.57 4s1 Roma 04.09.1987
3:35.82 David Kibet KEN 24.11.63 5s2 Barcelona 06.08.1992
3:35.82 Bernard Lagat KEN 12.12.74 1s1 Edmonton 10.08.2001
3:35.83 Joseph Chesire KEN 12.11.57 4s1= Los Angeles 10.08.1984
3:35.83 Peter Wirz SUI 29.07.60 4s1= Los Angeles 10.08.1984
3:35.84 Bernard Lagat KEN 12.12.74 2s1 Athínai 22.08.2004
3:35.87 Mehdi Baala FRA 17.08.78 1h1 Beijing 15.08.2008
(50)
3:35.88 Laban Rotich KEN 20.01.69 1h1 Atlanta 29.07.1996
3:35.88 Nixon Chepseba KEN 12.12.90 1s2 Moskva 16.08.2013
3:35.88 Robby Andrews USA 29.03.91 6s2 Beijing 28.08.2015
3:35.91 Steve Scott USA 05.05.56 5s1 Roma 04.09.1987
3:35.91 Ali Hakimi TUN 24.04.76 3s2 Atlanta 01.08.1996
3:35.91 Christian Obrist ITA 20.11.80 3h4 Beijing 15.08.2008
3:35.95 Matthew Centrowitz USA 18.10.89 2s2 Moskva 16.08.2013
3:35.97 Aman Wote ETH 18.04.84 7s2 Beijing 28.08.2015
3:36.00 Gert-Jan Liefers NED 26.09.78 3s1 Athínai 22.08.2004
3:36.0A Julius Kiptoo KEN 04.09.77 1h2 Nairobi 09.05.1997
(60)
3:36.01 Mohamed Suleiman QAT 23.11.69 4s2 Atlanta 01.08.1996
3:36.01 Adil Kaouch MAR 01.01.79 2s1 Edmonton 10.08.2001
3:36.01 Nick Willis NZL 25.04.83 2h1 Beijing 15.08.2008