Interesting subject. I took a look at the top 10 WR's in 2019 class as that class has mostly finished their college careers by now.
1. Jadon Haselwood: 5 star. Signed with Oklahoma. OK but not great player. Transferred to Arkansas. Undrafted free agent. Didn't come close to living up to best WR recruit in the country ranking. Underperformed relative to his rating.
2. Garrett Wilson: 5 star. Signed with OSU. Player three years achieving 70 receptions his third and final year. Drafted 10th by the Jets. NFL offensive rookie of the year. Lived up to his 5 star rating.
3. Kyle Ford: 5 star. Signed with UCLA. Still in college, having just announced he's entering the portal for the 2024 season. Last three years at UCLA have each been 20 reception years. Has not come close to living up to his 5 star billing. Significantly underperformed relative to his rating.
4. Theo Wease: 4 star. Signed with Oklahoma. Transferred to Missouri. Still in school having announced he will be returning for the 2024 season. Has played well in 2023, but his career hasn't matched his #4 WR ranking coming out of HS. Underperformed relative to his rating.
5. George Pickens: 4 star. Signed with Georgia. Played outstandingly well in his true Freshman and Sophomore years. Tore his ACL causing him to miss his third and final season at UGA. Drafted in the second round by Pittsburgh. Lived up to his #5 WR ranking at UGA.
6. Joe Ngata: 4 star. Signed with Clemson. Played 4 years there and had a good senior season. Never was elite for Clemson. Undrafted free agent. Underperformed relative to his rating.
7. Dominick Blaylock: 4 star. Signed with Georgia. Transferred to Georgia Tech. Mediocre at best. will go undrafted this year. Significantly underperformed relative to his rating.
8. Puka Nacka: 4 star. Signed with Washington. Transferred to BYU. This one is the toughest to categorize of all the top 10 guys. His career has played out in reverse order. Far better in the pros than in college. He didn't do anything his first two years at UW. Played very well, but not elite at BYU, hence his 5th round selection by the Rams. Absolutely blew up his first year in the NFL, against obviously tougher comp than college. I can't decide if he lived up to his HS ranking or not lol.
9. Frank Larson. 4 star. Signed with Clemson. Transferred to UM. Subsequently transferred to Mass. Complete bust. Significantly underperformed relative to his rating.
10. Dylan Wright. 4 star. Signed with TA&M. Transferred to Minnesota. Subsequently transferred to TCU. He's never done a thing in college. Significantly underperformed relative to his rating.
These were the top 10 WRs in the 2019 class. At least to my eye, WR's ranked in the elite level have been a crapshoot for all schools. UM isn't the only school to have elite WR recruits underperform. (Caveat: possibly other WR classes would yield different results.)