https://the-cauldron.com/the-2nd-round-and-misuse-of-probability-402639df1038
Out of how many taken?
article is old but kind of answers the question. About 10%. Only about 2.5% ended up all stars/ all NBA, and another 7% end up being positive / above average in terms of win shares per 48 minutes in their first 3 years. Article suggests 2d rounders are more useful to rising teams. No typical body type, position, or skills.