Hard to discount Al Oerter, but he was before my time.
When growing up I was fascinated by Sedykh and Litvinov, and although, Yuri holds the WR, I think they were equal, three OG golds (would have been 4 without 84 Boycott) three worlds when they were held 4 years apart, between them total domination of the event for 15 years.
Modern era, Kuzenkova, (womens Hammer) she tried and tried and eventually won the big two, after years of being very very close.
But my all time favourite thrower is the original one and only George Frenn. (and I even met the guy talk about dumb luck) Never saw him throw, but saw him squat 725 10 years after his 853 wr no suit wraps skinny belt, and he was so confident he used a skinny 180lb spotter (me).
George beat Dr Bondarchuck twice in 35lb weight in US vs USSR indoor meets.