There is at least one other Titanic survivor that I am aware of having been elected to a State Legislature after the sinking: Robert Williams Daniel, a Conservative Democrat, was elected in 1935 to the Virginia Senate where he would serve until his death in 1940.
That Titanic survivor went on to be elected to one term in the Minnesota State House in 1926. He would then lose reelection 2 years later by 102 votes. The district was based in Minneapolis, but I have not further specifics on that.
Many years after his death, his wife gave this 1980 interview:
Of course, don't take everything she said as gospel, though based on one detail she gives here: her husband was in the inside bunk and she was against the hull, so the iceberg would have passed just inches away from the bed in which she was lying.
As of this moment, Bernie Sanders and Mitch McConnell have voted aye on the exact same number of confirmation votes (11/12) thus far in 2021. They opposed different nominees however: McConnell opposed Mayorkas (confirmed 56-43) and Sanders opposed Vilsack (confirmed 92-7).
Burr & Capito are the other two who have only opposed one nominee on a confirmation floor vote, though Capito also missed a vote and Burr missed 2 votes.
You then have Cornyn, Fischer, Young & Blunt (though Blunt missed a vote as well) who have only voted against the confirmation of 2 nominees.