Interesting question! This inspired me to do some digging through the last ten years of TFFRS rankings.
XC all-Americans with strong mid-D performances:
- Sage Hurta: 4x XC all-American (40th 2016, 35th 2017, 22nd 2018, 38th 2019), 54.84/2:00.62 in 2021 (1:57.85 in 2022)
- Shelby Houlihan: 3x XC all-American (31st 2012, 8th 2013, 9th 2014), 2:01.92 in 2015
- Sintayehu Vissa: 33rd in 2021 XC, 2:01.06 in 2022
- Jonah Koech: 11th in 2015 XC, 48.30/1:46.23 in 2018 (1:44.74 in 2022)
Other mid-D athletes with strong XC performances:
- Kaela Edwards: 70th in 2015 XC, 55.26/2:01.97 in 2015/2016
- Claudia Saunders: 89th in 2015 XC, 2:00.63 in 2015
- Savannah Camacho: 116th in 2016 XC, 54.66/2:02.84 in 2014
- Katy-Ann McDonald: 163rd in 2021 XC, 2:00.98 in 2022
- McKenna Keegan: 224th in 2021 XC, 53.28/2:01.25 in 2022/2021
- Festus Lagat: 44th in 2021 XC, 1:45.05 in 2019
- Craig Engels: 90th in 2016 XC, 1:46.03 in 2016 (4th in 2016 Olympic Trials 800m)
- Charlie Hunter: 143rd in 2019 XC, 1:45.59i in 2021 (1:44.35 in June 2021)
- Michael Saruni: 228th in 2016 XC, 45.25/1:43.25 in 2018
- Emmanuel Korir: 249th in 2016 XC, 44.53/1:43.73 in 2017 (44.21/1:42.05 in 2018)
From a quick Google search, Andrew Wheating was 75th in 2008 XC after running 1:45.03 to finish 2nd in the 2008 Olympic Trials 800m. I’m sure there are more examples from that era. Clayton Murphy also deserves a special mention: 20th at 2015 Great Lakes XC Regionals after running 1:45.59 to qualify for Worlds and before a 2016 Olympic 800m bronze.