Josh okogie and elie okobo are two guards who are expected to be drafted into the nba this year and they both didn’t start fr hooping until 16
Elfrid payton isn’t a top 20 player, but he walked on at UL and people didn’t even know who he was, many say he didn’t even start varsity in hs.
And historically, Steve francis and John starks both were all stars in the nba and started in their teens.
There’s also andre roberson(okc thunder) and jimmy butler.
Though they’re wings.
That’s just off the top of my head, but people under estimate that you can be a good hooper by just being more athletic than others