Some great mentions. When I think one punch guys and not sure about numbers but I think guys that literally short circuit you with lead or counter. Few favs that have left many in a pile

Ricardo Lopez. Either hand either foot.
Engles Pedroza. Some iffy comp but as natural a brick layer as there was.
Wilfredo Gomez
O'Neil Bell had some awkward scary pop
Ruben Olivares
Julian Jackson
Benn
Louis
Bob Foster
Chico Corrales, Naz, Jones Jr, Valero, Bailey