My top 10 (1500-10k, including XC):
1. Jim Ryun
2. Gerry Lindgren
3. Dathan Ritzenhein
4. Alan Webb
5. Rudy Chapa
6. Hobbs Kessler
7. Lukas Verzbicas
8. Daniel Simmons
9. Marty Liquori
10. German Fernandez
HM (no order): Drew Griffith, Adam Goucher, Chris Solinsky, the Young brothers, Drew Hunter, Galen Rupp, Tim Danielson, the Sahlman brothers, Jeff Nelson, Edward Cheserek...could go on like this but you get the idea.
Simmons still has a shot to improve on this ranking, if Simmons can run sub-4:00 and a 2-mile record I would bump him up to 3rd-5th, if he really shatters the 2-mile (8:20ish) then perhaps 2nd. If he runs 13:1x at the Trials and/or makes top 8 then perhaps he would be my new GOAT (obviously Ryun made the team but it was a different era).
Griffith has it tough, he's a great runner and he had a great performance yesterday but I just don't see the argument for him over any one of these guys. Fernandez is the weakest link but if he's getting replaced I would favor Rupp, Danielson, Nelson, maybe even Cheserek over Griffith. FL champ with no national records to his name is just not enough, as good as his 8:31 closing in 4:06 was, it's probably worth at best 8:25 in a more even race, so a 4-second improvement over Verzbicas after 13 years...Verzbicas was also 2x FL champ, ran 3:59, ran sub-14:00, dominated everything his senior year, and even he is one of the last names on this list.
I'll also add that in a world where Young runs a full senior season he likely makes the top 10 but sadly I don't believe his resume as-is (7:56/13:40s/NXN champ) is good enough.