Let's be honest, though - all of these kids, however hard they work, are also top 1% athletes.
I agree with UcMiami in the sense that if you look over the history of WBB the best players are not merely a list of the most athletic players. But at the same time, people like Catchings, DT, and Maya are all superior athletes, even for pros.
To say of Walker - "She does not stand out in terms of size, speed, leaping ability, or other simple measurements" First of all, we don't have measurements on all these kids. I bet if we had NFL-combine style stats, she would stand out. Also, how many 6'1 players are truly off-the-dribble perimeter players. There's maybe a few each class. Some of the reason she can play that way is surely that she has worked hard on her handle but 99% of 6'1 girls are never going to be able to play that way regardless of how hard they work.
I mean, one of my dormmates in college was the DIII player of the year. She was 6-foot even, played as a post, and outran basically every opposition post she played against. Walker would make her look like a tortoise in a foot race.