Who are the great pressure fighters

Curtis Parker and Frankie Warren

 

Armstrong was one of them. McGovern deserves consideration.

 

Zack Padilla and Wayne McCullough had incredible punch outputs.

 

Kid Gavilan...Steve Collins...

 

Others worth mentioning

Myung Woo Yuh
Sung Kil Moon
Marcos Maidana

 

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No.undercard fights are hard to come by. For instance the great FRANKLIN-Douglas one under Duran-Viruet and Cobb-Mercado from Holmes-Snipes

 

Armstrong, Pryor, and Fullmer to name afiew, but based on what if read I’d also say Harry Greb

 

Cuevas
McGuigan
Scott
LaMotta
Tiger
Pintor
Provodnikov

 

Ad Wolgast

 

Harry Greb, Without a doubt one of the greatest pressure fighters of all time.

D Qawi, Marciano, Duran. Great in your face fighters.

 

dwight was a upgraded ver of joes style with changes which is why he did good vs George and always would but joe not as much

 

Henry Armstrong while not original seems to be left out of your OP. He knew how to take away any punch he wanted and could make you work from the outside to the clinch at the centre of the ring.

 

Inside fighting suffered at large in popularity with the change of glove design.
Which is reasonable to me.

 

Greb, Duran, Armstrong, Dempsey, Marciano, Frazier, Chavez, Basilio, Fullmer, LaMotta, Lomachenko, etc.

-Tyson gets listed a swarmer often but that would mostly be his pre-prison career, after that he was basically a one punch at a time slugger.

-Calzaghe was sort of an unorthodox swarmer as was Ken Norton.

 

Henry Armstrong
Beau Jack
(Young) Duran early 70s.
Aaron Pryor
Harry Greb
Phillip Holiday
Zack Padilla.

Bad Bennie Briscoe from Broadstreet.