Wilder hit harder than these 5 but I`d say Liston probably scored more one punch KO`s than the other four hereTyson and Foreman were more powerful than Marciano and Dempsey.
1-Liston 2-Foreman 3-Marciano 5-Wlad Klitschko 4-Joe Louis If the thread wasn't about heavyweight champions, Shavers and Lyle would be up there too.
Nice list, would love to hear your reasoning for Baer. Also, Wilder was never champion. At least I don't think alphabet champions should count.