According to Wikipedia Astor was worth 37 billion dollar(counted for inflation etc) and his wife had two sons with a childhood boyfriend, those two men wouldnt be born, but i dont know how much influence they had on history since they have no Wikipediapage.
John Jacob Astor IV that was born after the disaster could have inherited more than 3 million if his dad was still alive
Astors daughter might have married other wealthy men
The big change is Vincent Astor. After the disaster he dropped out of Harvard and began Philantropy and among other things built new housing in Bronx and Harlem. He was married 3 times and his last wife got all his money. The big lawsuit that came at the end of her life wouldnt be there.
All of this checked on Wikipedia
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Straus would be owner of Macys longer.
and so on.
One of the 3rd deck passengers could have gotten a son that joined the US army in WW1, got a promotion and went on to be a general in ww2 instead of someone else and thus changing the world.
For example, the shipbuilder Thomas Andrews might have escaped with his life and built other shipss