How well-known are these all-time great sports figures?

[DeanH3]

Was sitting here with my mom (75 this year) and asked her if she knew these names. Now sports was very predominate in our household growing up. And she has heard me blather about my card collection, so here are her answers. I figure I'll ask my wife as well and see what her answer will be.

Babe Ruth 99% - yes
Muhammad Ali 99% - yes
Jackie Robinson 99% - yes
Pele 99% - yes
Lou Gehrig 95% - yes
Mickey Mantle 95% - yes
Joe Frazier 80% - yes
Roberto Clemente 80% - yes
Joe DiMaggio 75% - yes
Ty Cobb 75% - yes
Shoeless Joe Jackson 60% - yes
Wilt Chamberlain 50% - yes
Bill Russell 50% - yes
Jack Dempsey 30% - yes
Joe Louis 30% - yes
Rocky Marciano 30% - yes
Jim Thorpe 30% - yes
Jack Johnson 25% - no
A.J. Foyt 25% - yes
Richard Petty 25% - yes
Honus Wagner 15% - yes
Satchel Paige 15% - yes
George Mikan 10% - no
Rogers Hornsby 3% - yes
Christy Mathewson 3% - yes
Walter Johnson 3% - yes
Bobby Jones 2% - n
Bronko Nagurski 2% - no
Josh Gibson 2% - no
Georges Vezina 1% - no