Pick A Lesser Known Fighter From Each Era That Would Most Trouble Today's Greats

Specificaly, who are some lesser known fighters (or at least fighters who don't show up fantasy matchups too often) who you think would trouble todays fighters whether it be due to style, training styles, vulnerabilities of fighters today, etc.

And lets go as follows: One fighter from each era, applied to any fighter today and in any weight class: Feel free to pick only one era or any combination thereof:

1980's:

1970's:

1960's:

1950's:

1940's:

1930's:

1920's:

 

I should have stated, its not just that Im looking for obscure names... just that I wanted to avoid the fighters who always show themselves in these types of threads.

Thanks for contributing. :good