The poster huiray, who comes up very early in that thread, posted on CH for a long time and used instant ramen kits as a basis for many of his meals. He left CH, I think before the big revision, and posted a long time on eG. I don’t know that he specifically set up a comparison but he might be someone to look for on CH. His top 3 brands included Sapporo, Myoto or Myojo something and one other that escapes me. I’ve never been able to find that one here. In my experience, Sapporo is maybe the worst for high sodium content.
The Korean brand Nongshim (ramyun) is ubiquitous in American supermarkets. The Shin referred to above is their line. Sho Spaeth, who is Korean and maybe biased 
, had some good pieces on Serious Eats about the Nongshim products. I don’t know if they’re still available. I believe it was one of his articles where I picked up the tip that only using the packets and cooking the noodles in boiling water rather than the more convenient Cups or Bowls in the microwave or just adding hot water and letting them soak, produces a better experience.
Ramen Rater, mentioned by @ChimayoJoe, is very good, I think, but so overwhelming. If your son is just looking for some things to try first, just consider the top recommendations (if you can find them in your stores).
I like the Nissin Raoh line. Raoh means King. The noodles are air dried and superior. Limited variety and, down here anyway, limited distribution, but worth it.
Good luck to your son on his quest, and, most importantly, Enjoy. Hope you can find the original thread or take the suggestions in this thread to just start out exploring.
I’ve gotten so fond of ramen I’m eating it for breakfast now.
