Here are all freshmen/sophomores who were All-Conference 1st team for a major conference (no particular order):
ACC: Matthew Hurt and Justin Champagnie
Big 12: Cade Cunningham
Big East: James Bouknight, Julian Champagnie, Jeremiah Robinson-Earl
Big 10: EJ Liddell, Kofi Cockburn
Pac 12: Evan Mobley, Tyger Campbell
SEC: Moses Moody, Cameron Thomas, Tre Mann, Scotty Pippen Jr.
You'd think that this list, supposedly the best young players in the best conferences, would naturally be a who's-who of lottery picks. But instead you have a complete mix, where you have top-5 guys like Cunningham and Mobley, you also have players like Liddell, Cockburn, Pippen Jr. and Campbell who have little or no draft buzz. There are cases like Campbell where you could definitely argue that he shouldn't have been on the All-conference first team. But for the others, it's like some groupthink decision has been made that their NCAA-level production won't translate to the pros. This is baffling to me...I really don't think it's very easy to predict whose production is most likely to translate.