Each persons situation is different amounting to varying strategies.
These folks do a good job weighing your particulars, but the full report costs a few $ while as a short assessment is free. I did it a few years ago, gives you the best choice, dollar wise, as well as how much you lose or gain by deviating from their optimal.
You can also use
I-Orp plugging in your own numbers to see how much you can spend in a given year, then change the SS start years and see how much spending $ you gain or lose per year. Takes a bit of work digging up with the numbers.
You do have to come up with a projected longevity, I went by family history.
